My first introduction to Severus Alexander coins were the Imperial ones, mainly denarii.  As I branched out into the Provincial coins, I found the Egyptian Billion Tetradrachms of Severus Alexander extremely interesting.   They allow me to combine my love of both the Egyptian and Roman civilizations into one collectible.      

Attribution of the coins is very similar to other provincial coins.   On the reverse you will sometimes find a Large "L" with another Greek character or characters inside (next to it).  The characters next to the Large "L" indicate the year of Alexandrian Regnal.   This is the Alexandrian chronology of the reign of emperors.  It goes by the date August 12th as the beginning of a new year.  An emperor's second year falls on this date, no matter how many months his reigned.  For number over 10, you combine the letter for ten with the letter for the ones.  You can convert the character to the Regnal with the chart below.  

From the Alexandrian Regnal, you can figure the year of the coin by the following chart.

** = Also Elagabalus 5       ***= Also Maximinus 1

*An interesting study by Andrew Burnett and Paul Craddock in ANSMN 28 states the belief that Alexandrian Tets in the years 4,5 and 7 were minted in Rome for use in Alexandria.   Minting coins in a different area than they are used in is not an unknown event.   Looking at the style and appearance of the coins, the noting of the regnal years differently, busts and legends vary, the divergence in reverse types, and die axis differences. ; the authors present a very compelling argument that I have to agree with.  Look below and note the coins labeled as minted from Rome from the other coins.    They are definitely very different coins.

Here are examples of Egyptian Billion Tetradrachms of Severus Alexander:

Caesar (regnal dates are under Elagabulus)

 Year 5 (221- 222 AD).  Ob. Bare headed draped bust (as Caesar).  Rev. Athena with Nike and shield.  Ref. Curtis 1039, Koln 2396, BMC 1583, Milne 2839, Curtis 1039.  12.97 grams, axis 12 o'clock.

Year 5 (221- 222 AD).  Ob. Bare headed draped bust (as Caesar).  Rev. Athena standing facing, head left, holding Nike and shield  Ref. Köln 2396; Dattari 4241; Milne 2839; Emmett 3073, 23mm, 10.50 grams, axis 12 o'clock.

Year 5 (221- 222 AD).  Ob. Bare headed draped bust (as Caesar).  Rev. Head of Zeus Ammon right with ram's horn, wears headdress of horns and disk  Ref. Koln 2394, BMC 1581, Datt 4249, Milne 2853, Curtis 1037.   12.88 grams, axis 12 o'clock.

Year 5 (221-222 AD) Ob. Bare headed draped bust (as Caesar).  Rev. Athena standing left, wears aegis; holds little Nike right bearing wreath and palm, and rests left hand on shield on the ground..  Ref. Curt 1039, Milne 2839, BMC 1583, Koln 2396.  13.84 grams, axis 12 o'clock.

Year 5 (221-222 AD) Ob. Bare headed draped bust (as Caesar).  Rev. Busts, jugate, right, of Helios and Selene; Helios radiate and wars chlamys,

Selene with crescent on head wears tania and chiton fastened on left shoulder with fibula..  Ref. Milne 2825, Datt 4242.  14.23 grams, axis 12 o'clock.

Year 5 (221-222 AD) Ob. Bare headed draped, cuirassed bust right (as Caesar).  Rev. Ares standing left, holding reversed spear and parazonium, shield on ground behind .  Ref. Datt 4239, Milne 2842, Emmett 3071.  13.50 grams, axis 12 o'clock.

Augustus

Minted in Rome

Year 4 (224-225 AD) Ob. Bust Laur. draped.  Rev.  Sarapis seated left, wears modius right hand extended over Kerberos, who sites at his left feel, left hand rests on sceptre.    Milne 2943, Datt 4859, BMC 1661.  13.89 grams, Axis 6 o'clock.

Year 5 (225 -226 AD)  Ob. Bust laur.  Rev. Serapis standing left with right hand raised and sceptre in left hand.  Ref Curtis 1097. 14.36 grams, 12 o'clock axis. 

Year 5 (225 -226 AD)  Ob. Bust laur.  Rev. Serapis standing left with right hand raised and sceptre in left hand.  Ref Curtis 1098, Milne 2973, Emmett 3134.. 14.13 grams, 12 o'clock axis. 

Year 5 (225 -226 AD)  Ob. Bust laur.  Rev. Serapis standing left with right hand raised and sceptre in left hand.  Ref Curtis 1098, Milne 2973, Emmett 3134.. 10.27 grams, axis 6 o'clock.

Year 5 (225 - 226 AD)  Ob.  laur. bust.   Rev.  Julia Mamaea.  Ref. Curtis 1075, Milne 2976, BMC 1717.   13.09 grams, axis 12 o'clock.

Year 5 (225-226 AD) Ob. Laur. draped bust.  Rev.  Sarapis seated left wears modius, right hand extended over Kerberos, who sits at his feet, left hand rests on sceptre, with throne with back.  Ref. BMC 1664, Milne 2975.  11.01 grams, axis 12 o'clock.

Year 5 (225-226 AD) Ob. Laur. draped bust.  Rev.  Sarapis seated left wears modius, right hand extended over Kerberos, who sits at his feet, left hand rests on sceptre, with throne with back.  Ref. BMC 1662, Emmett 3135/5.  12.0 grams, axis 6 o'clock.

Year 7 (227-228 AD) Ob. Laur. draped bust.  Rev.  Sarapis seated left wears modius, right hand extended over Kerberos, who sits at his feet, left hand rests on sceptre, with throne with back.  Ref. BMC 1665, Milne 3009, Datt 4364.  11.03 grams, axis 12 o'clock.

Minted in Alexandria

Year 1 (221-222 AD) 12.90g.  Ob. Laur. draped bust right.  Rev.: Athena standing l. holding Victory and transverse spear, shield at feet. From the famous Dattari collection, illustrated with a rubbing in Bernardi's Catalogo Completo of that collection, Trieste 1999. This type not in the extensive Alexandrian collections of either Curtis or Cologne University, so hardly "very common" as indicated by Emmett. F+  Emmett-3094 (1), Dattari-4783 Cat. Completo pl. 231 (this coin).  12.92 grams.  Axis 12 o'clock.

Year 1 (221-222AD).  Ob. Laur. cuir. draped bust right.  Rev.  Nike flying right, holds palm over shoulder & wreath to right.  Ref. Curtis 1080, BMC 1627, Milne 2878, Koln 2402.  13.24 grams, axis 12 o'clock.

Year 1 (221-222AD).  Ob. Laur. cuir. draped bust right.  Rev.  Dikaiosyne standing left, holding scales and cornucopiaea.  Ref. Koln 2401, BMC 1614, Milne 2876..  11.70 grams, axis 12 o'clock.

Year 1 (221-222AD).  Ob. Laur. cuir. draped bust right.  Rev. Eagle standing left, head turned back, wreath in beak.    Ref.  Koln 2400, BMC 1692, Milne 2883, Datt 4406, Kop. 614..  11.70 grams, axis 12 o'clock.

Year 1 (221-222AD).  Ob. Laur. cuir. draped bust right.  Rev. Zeus bust right, laurelled.    Ref.  Milne 2873, BMC, 1590, Datt 4386.  10.28 grams, axis 12 o'clock.

Year 1 (221-222AD).  Ob. Laur. cuir. draped bust right.  Rev. Tyche recumbent left, wears modius, holds rudder and raises left hand to head on garlanded couch..    Ref.  Koln 2405, Datt 4381, BMC 1643, Milne 2879, Curtis 1102/1103.  12.63 grams, axis 12 o'clock.

Year 1 (221-222AD).  Ob. Laur. cuir. draped bust right.  Rev. Bust of Sarapis right, wears modius with floral ornaments.   Ref. Ex Emmett Collection, Emmett 3133(1),  Koln 2404, Datt 4343, BMC 1648, Milne 2880 var.  11.68 grams, axis 12 o'clock.

Year 1 (221-222AD).  Ob. Laur. cuir. draped bust right.  Rev. Hermanubis standing right, holds caduceus and palm..   Ref. Ex Emmett Collection, Emmett 3108(1) , Datt 4300. rare coin.   13.63 grams, axis 12 o'clock.

Year 1 (221-222AD).  Ob. Laur. cuir. draped bust right.  Rev. Wolf and Twins left.   Ref. Ex Emmett Collection, Emmett 3141(1) , BMC 1680, 1681, Curtis 1107, Milne 2884, Datt 4417.   13.55 grams, axis 12 o'clock.

Year 2 (222-223 AD).  Ob.  Bust Laur.  Rev. Eagle standing left, head turned back, wreath in beak.   Ref.  Curtis 1060 variant, BMC 1693, Milne 2896. 12.65 grams, axis 12 o'clock.

Year 2 (222-223 AD).  Ob. Laur. draped bust right.   Rev:  Bust of Nilus right, wearing crown of lotus flowers and buds, Cornucopia across right shoulder.  Koln 2410, BMC 1668 var, Curtis 1083, Milne 2894 var.  11.99 grams.  Axis 12 o'clock.

Year 2 (222-223 AD).  Ob. Laur. draped bust right.   Rev:  Bust of Nilus right, wearing crown of lotus flowers and buds, Cornucopia across right shoulder.  Koln 2410, BMC 1668 var, Curtis 1083, Milne 2894 var.  10.37 grams.  Axis 12 o'clock.

Year 2 (222-223 AD).  Ob. Laur. draped bust right.   Rev:  Bust of Helios radiant. Dattari 4301.  13.88 grams.  Axis 12 o'clock.

Year 2 (222-223 AD).  Ob. Laur. draped bust right.   Rev:  Nike advancing right hold palm and wreath..  Dattari 4316, Emmett 3115.2, Koln 2409,  Milne 2890.  14.22 grams.  Axis 12 o'clock.

Year 2 (222-223 AD).  Ob. Laur. draped bust right.   Rev: Tyche standing left, wears modius, holds rudder and cornucopia.  Dattari 4373, BMC 1636. Emmett 3115.2, Koln 2413,  Milne 2891, Curtis 1105v, Kop. 616.  12.88 grams.  Axis 12 o'clock.

Year 2 (222-223 AD).  Ob. Laur. draped bust right.   Rev: Tyche standing left, wears modius, holds rudder and cornucopia.  Dattari 4373, BMC 1636. Emmett 3115.2, Koln 2413,  Milne 2891, Curtis 1105v, Kop. 616.  12.58 grams.  Axis 12 o'clock.

Year 3 (223-224 AD).  Ob. Laur. bust.  Rev. Homonoia std. l., raising r. hand, holds in l. double cornucopiae.  Ref.  Curtis 1072, BMC 1622 var, Milne 2902 var, Koln 2416.  12.31 grams, axis 12 o'clock.

Year 3 (223-224 AD).  Ob. Laur. bust.  Rev. Homonoia std. l., raising r. hand, holds in l. double cornucopiae.  Ref.  Curtis 1072, BMC 1622, Milne 2902 var, Koln 2416.  12.74 grams, axis 12 o'clock.

Year 3 (223-224 AD).  Ob. Laur. bust.  Rev. Tyche recumbent left, wears modius, holds rudder and raises left hand to head with couch garlanded. Ref.  Ex. Emmett collection, Emmett 3140(3), Curtis 1104, BMC 1644, Milne 2911, 2904, Koln 2417.  13.73 grams, axis 12 o'clock.

Year 3 (233-234 AD) Ob. Laur. draped bust right.  Rev.  Eagle left with wreath in beak, palm across.  Interesting note here is that the obverse legend is missing.  How does one tell that this is Severus Alexander than?  It looks like him but asking an expert I found "Elagabulus doesn't fit because his portrait was "head only" in his year 3, plus he doesn't have this Ptolemaic eagle type with head l.  Max. Thrax, Gord. III, Philip I, Gallus and Volus., Gallienus, Aurelian can all be eliminated for similar reasons--the portrait doesn't fit and that eagle type doesn't occur".  Looks like Milne 2906, BMC 1698, Emmett 3098 or some variation.. 13.16 grams.  Axis 12 o'clock.

Year 3 (223-224 AD).  Ob. Laur. bust.  Rev. Athena seated left, wears aegis, holds little Nike right bearing wreath and palm and rests on sceptre, besides throne, shield., BMC 1605, Datt 4284, Koln 2415.  13.83 grams, axis 12 o'clock.

Year 4 (224-225 AD).  Ob. Laur. bust.   Rev.  Athena seated left, wears aegis, holds little Nike right bearing wreath and palm and rests on sceptre; beside throne shield..  Ref. Curtis 1053, Kolne 2420, Milne 2915 var, BMC 1606.  12.35 grams, axis 12 o'clock.

Year 4 (224-225 AD).  Ob. Laur. bust.   Rev.  Athena seated left, wears aegis, holds little Nike right bearing wreath and palm and rests on sceptre; beside throne shield..  Ref. Curtis 1053, Kolne 2420, Milne 2915 var, BMC 1606.  13.10 grams, axis 12 o'clock.

Year 4 (224-225 AD) Ob. Laur. draped bust right.   Rev. Dikaiosyne standing left with scales and cornucopia.  Ref.  Curtis 1057, Milne 2918, BMC 1616, Koln 2421.  12.89 grams, axis 12 o'clock

Year 4 (224-225 AD) Ob. Laur. draped bust right.   Rev. Dikaiosyne standing left with scales and cornucopia.  Ref.  Curtis 1057, Milne 2918, BMC 1616, Koln 2421.  13.33 grams, axis 12 o'clock

Year 4 (224-225 AD) Ob. Laur. draped bust right.   Rev. Eagle with wreath in beak, head right..  Ref.  Curtis 1060, Milne 2935/2936, BMC 1694, Koln 2418, Datt 4408.  14.81 grams, axis 12 o'clock

Year 4 (224-225 AD) Ob. Laur. draped bust right.   Rev. Tyche recumbent left, wears modius; holds rudder and raises left hand to head; couch garlanded.  Ref.  Koln 2423, Datt 4383, Milne 2930/2931, BMC 1645.  11.65 grams, axis 12 o'clock

Year 5 (225-226 AD) Ob. Laur bust.  Rev. Dikaiosyne std left holding scales and cornucopiae.  Ref. Curt 1059, Milne 2951, BMC 1617, Koln 2428.  13.26 grams, axis 12 o'clock.

Year 5 (225-226 AD) Ob. Laur bust.  Rev.Tyche recumbent left, wears modius, holds rudder and raises left hand to head; couch garlanded .  Ref. BMC 1646, Milne 2962.  12.00 grams, axis 12 o'clock.

Year 5 (225-226 AD) Ob. Laur bust.  Rev.Nike advancing right, holds wreath and palm..  Ref. BMC 1630, Datt 4317.  13.02 grams, axis 12 o'clock.

Year 5 (225-226 AD) Ob. Laur bust.  Rev. Eagle looking back wreath in beak..  Ref. Koln 2426, BMC 1695, Datt 4409, Milne 2965/2966.  12.30 grams, axis 12 o'clock.

Year 5 (225-226 AD) Ob. Laur bust.  Rev. Nilus recumbent left, crowned with lotus left arm rests on head of hippopotamus right, holds reed and cornucopiae from which emerges little genius left, holding wreath to Nilus..  Ref. Koln 2430, BMC 1673, Datt 4334, Milne 2964.  12.57 grams, axis 12 o'clock.

Year 5 (225-226 AD) Ob. Laur bust.  Rev. Nilus reclining left, holding reed and cornucopia from which rises Genius.  Ref. Koln 2430, Milne 2964, Datt 4334.  14.18 grams, axis 12 o'clock.

Year 5 (225-226 AD) Ob. Laur bust.  Rev. Athena seated left, wears aegis, holds little Nike right bearing wreath and palm and rests on sceptre, besides throne, shield.  Ref. Koln 2427, BMC 1607 var, Datt 4286.  13.45 grams, axis 12 o'clock.

 Year 6 (226-227 AD)  Ob.  Bust Laur.  Rev.  Eagle standing left, head turned back, wreath in beak.  Ref. Curtis 1060 variant, BMC 1696, Milne 3000.  12.36 grams, axis 12 o'clock.

Year 6 (226-227 AD)  Ob.  Bust Laur.  Rev.  Homonoia standing left, right arm raised, left holds double cornucopiae.  Ref. BMC 1624, Datt 4308.  11.85 grams, axis 12 o'clock.

Year 6 (226-227 AD)  Ob.  Bust Laur.  Rev.  HBust of Sarapis right, wears modius with floral ornaments. .  Ref. BMC 1653, Datt 4350.11.58 grams, axis 12 o'clock.

 Year 6 (226-227 AD)  Obverse:  Bust laur. right.   Rev.  Nilus recumbent left, crowned with lotus, left arm rests on head of hippopotamus right, holds reed and cornucopia from which emerges little Genius left, holding wreath to Nilus.   Ref.  Koln 2442, Datt 4335 var, BMC 1674, Milne 2997.  11.63 grams, axis 12 o'clock.

Year 7 (227 -228 AD)  Ob.  Bust laur.   Rev.  Asclepius standing left, sacrificing with patera over lighted altar, and leaning on serpent-staff.  Koln 2444, BMC 1611 var, Curtis 1049 var., Datt 4268 var.  13.75 grams, axis 12 o'clock.

Year 7 (227 -228 AD)  Ob.  Bust laur.   Rev.  Asclepius standing left, sacrificing with patera over lighted altar, and leaning on serpent-staff.  Koln 2444, BMC 1611 var, Curtis 1049 var., Datt 4268 var.  13.59 grams, axis 12 o'clock.

Year 7 (227 -228 AD)  Ob.  Bust laur.   Rev.  Dikaiosyne seated left holding scales and cornucopia.  Datt 4296, Milne 3017.  12.64 grams, axis 12 o'clock.

Year 7 (227 -228 AD)  Ob.  Bust laur.   Rev.  Bust of Athena wearing Athenian helmet . Milne 3014, Emmett 3093(7)   12.24 grams, axis 12 o'clock.

Year 10 (230-231 AD)  Ob.  Bust laur.   Rev.  Wreath with writing.   Dattari 4402, Milne 3036,  Curtis 1108, BMC 1703.  13.65 grams, axis 12 o'clock.

Year 10 (230-231 AD)  Ob.  Bust laur.   Rev.  Sarapis seated, with one hand on staff and other hand over Kerberos seated in front..   Dattari 4366, Milne 3030,  Curtis 1096.  12.17 grams, axis 12 o'clock.

Year 10 (230-231 AD)  Ob.  Bust laur.   Rev.  Tyche standing left wears modius, holds rudder and corncopiae, palm behind.    Dattari 4377, Milne 3042,  BMC 1639, Koln 2463.  13.53 grams, axis 12 o'clock.

Year 10 (230-231 AD)  Ob.  Bust laur.   Rev.  Homonoia standing left hold doulble corncopiae, palm in front.    Dattari 4431/4432, Koln 2457.  13.25 grams, axis 12 o'clock.

Year 10 (230-231 AD)  Ob.  Bust laur.   Rev.  Homonoia standing left hold doulble corncopiae, palm in front.    Dattari 4431/4432, Koln 2457.  12.61 grams, axis 12 o'clock.

Year 11 (231-232 AD).  Ob.  Laur. draped bust right.   Rev.  Radiant bust of Helios, palm in front.  Milne 3051, BMC 1599, Curtis 1067, Datt 4302.  12.15 grams.  Axis 12 o'clock.

Year 11 (231-232 AD).  Ob.  Laur. draped bust right.   Rev.  Radiant bust of Helios, palm in front.  Milne 3051, BMC 1599, Curtis 1067, Datt 4302.  12.55 grams.  Axis 12 o'clock.

Year 11 (231-232 AD).  Ob.  Laur. draped bust right.   Rev.  Elpis standing left, holding flower, palm leaf to left.   Koln 2467, Datt 4297, Milne 3062, Emmett 3101.11.  11.78 grams.  Axis 12 o'clock.

Year 11 (231-232 AD).  Ob.  Laur. draped bust right.   Rev.  Elpis standing left, holding flower, palm leaf to left.   Koln 2467, Datt 4297, Milne 3062,B MC 1620, Emmett 3101.11.  13.07 grams.  Axis 12 o'clock.

Year 11  (231-232 AD).  Ob. Laur. draped bust right.   Rev:  Tyche stg. left holding rudder and cornucopia. To right, palm branch.    Koln 2472, BMC 1640 var,  Milne 3073.  13.93 grams.  Axis 12 o'clock.

Year 11 (231-232 AD) Ob. Laur. draped bust.   Rev.  Serapis head with modius, palm branch to right. Ref. BMC 1655, Milne 3077, Koln 2471, Curtis 1094.  12.82 grams, axis 12 o'clock.

Year 11 (231-232 AD) Ob. Laur. draped bust.   Rev. Alexandria standing, facing, head left, wears elephant's skin on head, chiton with diplois, peplos over left shoulder and across breast and over left arm, and cothurni; holds in raised right hand ears of corn, and in left vexillum; on left palm.   Ref. BMC 1687, Milne 3085, Koln 2465, Curtis 1045, Datt 4263.  11.64 grams, axis 12 o'clock.

Year 11 (231-232 AD) Ob. Laur. draped bust.   Rev. Nilus, with crocodile beside him, reclining, l., holding cornucopia, from which issues Genius holding wreath, and reed.  Palm to left.   Ref. Ex. Emmett Collection, Emmett 3123(11), only known example..  11.64 grams, axis 12 o'clock.

Year 12 (232-233 AD) Ob. Laur. bust.   Rev.  Isis bust right wearing crown of disc & plumes..  Ref.  Koln 2479, Milne 3118, Curtis 1074, Dattari 4313.  14.01 grams, axis 12 o'clock.

Year 12 (232-233 AD) Ob. Laur. bust.   Rev.  Athena seated left, wears aegis, hold little Nike right, bearing wreath and palm and rests on sceptre; besides throne shield.  Ref.  BMC 1610, Datt 4288, Milne 3099.  12.18 grams, axis 12 o'clock.

Year 12 (232-233 AD) Ob. Laur. bust.   Rev.  Bust of Athena right, wears Athenian helmet adorned with sphinx beneath crest, and one front quadriga of Helios, whose chlamys files behind him; she is clad in chiton fastened by fibula; in front, palm.  Ref. Koln 2476,  BMC 1603, Datt 4275, BMC 1603, Curtis 1051/1052.  13.73 grams, axis 12 o'clock.

Year 12 (232-233 AD) Ob.  Laureate, draped, and cuirassed bust right, seen from behind /  Rev. Helmeted bust of Athena right; L IB (date) behind, palm before. Köln 2476; Dattari (Savio) 4275; K&G 62.176; Milne 3096; Emmett 3093.  23mm, 13.33 g, 12 o'clock.

Year 12 (232-233 AD) Ob. Laur. bust.   Rev.  Alexandria standing left, turreted, wears chiton and holds bust of Sarapis wearing modius right, and rests on spear; in front, palm.  Ref.  BMC 1690, Datt 4267, Curtis 1047.  13.88 grams, axis 12 o'clock.

Year 12 (232-233 AD) Ob. Laur. bust.  Rev. Alexandria standing, facing head left, wears elephant's skin on head, chiton with diplois, peplos over left shoulder, and across breast adn over left arm, and chothurni; holds in raised right hand ears of corn, and in teh left vexillum; on left palm.  .  Ref.  Curtis 1046 variant, Milne 3124, BMC 1687 variant, Datt 4264.. 12.40 grams, axis 12 o'clock.

Year 12 (232-233 AD) Ob. Laur. bust.   Rev. Homonoia standing left hold double cornucopia, palm in front..  Ref.  Koln 2478, Milne 3108,  Dattari 4312.  12.51 grams, axis 12 o'clock.

Year 13 (233-234 AD) Ob. Laur. draped bust right.   Rev. Trophy of helmet with cheek-pieces cuirass and four shields, behind each pair of which two javelins; at foot two captives back to back; to left palm.  Ref.  Curtis 1101 variant, Milne 3166, BMC 1701, Datt 4404, Koln 2491.   12.47 grams.  Axis 12 o'clock.

Year 13 (233-234 AD) Ob. Laur. draped bust right.   Rev. Nilus seated left on rocks, crowned with lotus, wears himation over right left and left arm, holds reed and cornucopia, palm below .  Ref.  Milne 3155, Datt 4338.   12.34 grams.  Axis 12 o'clock.

Year 13 (233-234 AD) Ob. Laur. draped bust right.   Rev. Tyche standing left, wears modius, holds rudder and cornucopia .  Ref.  Koln 2492, Milne 3149, Datt 4380, BMC 1642.   13.76 grams.  Axis 12 o'clock.

Year 13 (233-234 AD) Ob. Laur. draped bust right.   Rev. Athena seated left, wears aegis, holds little Nike right bearing wreath and palm and rests on scepter; besides throne shield .  Ref. Milne 3135, Datt 4289.   12.80 grams.  Axis 12 o'clock.

Year 13 (233-234 AD) Ob. Laur. draped bust right.   Rev. Askelpios standing left, holding patera over altar and leaning on serpent staff; palm in right..  Ref. Milne 3137, Dattari 4271, Curtis 1050.   11.85 grams.  Axis 12 o'clock.

Year 14  (234-235 AD) Ob. Laur. draped bust right..  Rev. Two twins suckling she wolf right, head left., Emmett 3142.   Ref. Datt 4418, Milne 3180,    11.61 grams.  Axis 12 o'clock.

Year 14  (234-235 AD) Ob. Laur. draped bust right..  Rev. Zeus seated left, laureate, holds patera and rests on sceptre, at his feet, eagle left, looking back; behind palm..   Ref. Koln 2496, BMC 1595, Datt 2530, Milne 3170,   13.43 grams.  Axis 12 o'clock.

Here are examples of Egyptian Billion Tetradrachms of his mother Julia Mamaea:

(regnal dates are under Severus Alexander)

Year 5 (225 -226 AD)  Ob.  Draped bust right..   Rev.  Zeus seated left on throne, holding phiale and scepter, at feet to left, eagle standing left. Ref.   Koln 2507, Dattari 4526.  11.95 grams, axis 12 o'clock.

Year 6 (226 -227 AD)  Ob.  Bust right.   Rev. Serapis head with modius, palm branch to right..  Ref.Ex Emmett collection,  Emmett 3224(5), Datt 4509. 12.41 grams, axis 12 o'clock. Rare.

Year 7 (227 -228 AD)  Ob.  Bust wears stephane.   Rev.  Emperor on horseback left, laureate.; wears cuirass and cothurni, paludamentum over right shoulder across breast and flying behind him, right arm outstretched, in left hand, scepter surmounted by eagle; horse walking.  Ref.  BMC 1760, Curtis 11128/9 var., Milne 3164v.  11.54 grams, axis 12 o'clock.