I received this coin in the mail earlier this week: Time of Commodus Quasi-autonomous AE 26.1 mm, 8.01 g, 5 h Ionia, Smyrna, Strategos Kl. Stratoneikianos, AD 182-184 Obv: ΙЄΡΑ ϹVΝ [ΚΛΗΤΟϹ], draped bust of Senate, right Rev: CΤΡ•CΤΡΑΤΟΝЄΚ[ΙΑΝΟV СΜVΡΝΑΙΩΝ], Winged Nemesis of Smyrna, advancing right, plucking chiton and holding bridle Refs: RPC IV 278 (temp); Klose XV B a; SNG Cop. 1304. I have tracked down the listing in SNG Copenhagen and I believe my coin is a reverse die match to the Copenhagen plate coin. First, here's the listing:* *We now know it's from the time of Commodus, not Severus, because Kl. Stratoneikianos was magistrate from AD 182-184. Note how the listing mentions that the first iota in CΤΡΑΤΟΝЄΙΚΙΑΝΟV (the name of the magistrate (Strategos) Kl. Stratoneikianos) is uncertain. My coin's inscription reads CΤΡΑΤΟΝЄΚ[...]. This is a spelling variation from other coins from this issuing authority such as this one, this one, and the RPC listing for my coin, which all read CΤΡΑΤΟΝЄΙΚΙΑΝΟV with an iota between the Є and the Κ. Therefore, I suspect that my coin is a reverse die-match to the Copenhagen plate coin: A side-to-side comparison shows an excellent correspondence between the shape of the visible letters of the reverse inscription and between the letters' relationship to the Nemesis figure: I think it's a match? What do you think?
I'm not sure either but I think it is likely a match. I played with it a bit in photoshop, superimposing one on the other (with the top coin somewhat transparent in order to line them up). The reverse legend lines up rather well. The cited coin looks a bit broader, as in distorted by shooting angle (or conversely, your coin being distorted in the opposite direction). Correcting for that makes it work for major reference points of Nemesis. A die match between two provincial coins wouldn't be particularly unusual, would it? With provincial coins, we've seen examples on this board of two coins with different reverses having die matched obverses.
