Gallienus Æ 22mm of Edessa, Macedon. AD 253-268. ΓΑΛΛΙΗΝΟC, radiate head to right / ЄΔΕCCΑΙΩΝ, Dionysus standing to left, holding bunch of grapes and thyrsus. Varbanov -, cf. 3704; SNG Copenhagen -; SGI -; SNG ANS -; seemingly unpublished in the standard references. 6.19g, 22mm, 8h.
Good Very Fine. Possibly Unique; seemingly unpublished in the standard references and no other examples on CoinArchives - indeed, no other examples of Gallienus coins of Edessa can be found in the standard references or CoinArchives in general, apart from Varbanov 3704, about which Varbanov states "[t]here is no evidence of authenticity."
From a private UK collection.