Diadumenian Caesar, AE Tetrassarion (4 Assaria), 218 AD (May-8 June), Nicopolis ad Istrum [Nikyup, Bulgaria] Mint, Moesia Inferior, Statius Longinus, Consular Legate. Obv. Bareheaded bust of Diadumenian right, draped and armored, seen from behind, M OPEL DIADOV-MENIANOC K (OV ligate) [ = Marcus Opellius Diadumenianus, Caesar] / Rev. Artemis, wearing short chiton, walking right, holding bow in left hand and drawing arrow from quiver in right hand, hound jumping behind her left foot, VΠ CTA ΛONΓINOV NIKOΠOΛITΩN ΠPOC I / CTPΩ in exergue [ = Consular legate Statius Longinus, (Governor) of the residents of Nikopolis on the (river) Istros]. AMNG I/I 1843 [Pick, Behrendt, Die antiken Münzen von Dacien und Moesien, Die antiken Münzen Nord-Griechenlands Vol. I/I (Berlin, 1898) at p. 467]; Varbanov I 3743 [Varbanov, Ivan, Greek Imperial Coins And Their Values, Volume I: Dacia, Moesia Superior & Moesia Inferior (English Edition) (Bourgas, Bulgaria, 2005) at p. 308]; Hristova-Hoeft-Jekov 22.214.171.124 [Hristova, H., H.-J. Hoeft, & G. Jekov. The Coins of Moesia Inferior 1st - 3rd c. AD: Nicopolis ad Istrum (Blagoevgrad, 2015)]. 27.5 mm., 9.30 g., 2 h.* * The coin appears to match the die classified as Obverse Die No. 9 in the table entitled “Nicopolis ad Istrum - 4 assaria - die matches” [see http://www.diadumenian.com/Die tables nicopolis 4 assaria.html]. It appears to be an obverse die match to the two coins depicted at http://www.diadumenian.com/Nicopolis artemis longinus.html, the second of which was sold at Gorny & Mosch, Giessener Münzhandlung Auction 121, 2005 Lot number: 300. The coin also appears to be an obverse die match to, inter alia, the coins depicted at https://www.cngcoins.com/Coin.aspx?CoinID=17248 and http://www.forumancientcoins.com/catalog/roman-and-greek-coins.asp?zpg=28570 . Here are photos of some of the coins I found (I looked through a lot of Diadumenian coins from Nicopolis!) that I see as obverse die matches, and possibly reverse die matches as well. Please let me know if you agree that these are all obverse die matches, and also if you see any of them as reverse die matches. From http://www.diadumenian.com/Nicopolis artemis longinus.html; this is also the coin depicted as Obverse Die No. 9 in table entitled “Nicopolis ad Istrum - 4 assaria - die matches”: From Forum Ancient Coins, a 2007 article entitled The Longinus Dies for Macrinus and Diadumenian at Nicopolis ad Istrum (A Provisional Die Study) (see http://www.forumancientcoins.com/ayiyoryitika/longinusdies.html, illustration R8ivbis [oddly enough, this obverse die type does not appear as one of the types covered in the article; only as one of a number of illustrations to a type with a different legend]): From Gorny & Mosch 2005 auction: From CNG Archives: From Forum Ancient Coins, sold coins: From Forum Ancient Coins, gallery of dpaul7: Also, please feel free to post your own provincial coins of Diadumenian, or your coins of anyone from Nicopolis ad Istrum.