Watch List notes:

Mysia, Parium. Gallienus. A.D. 253-268. AE 21 (20.82 mm, 3.55 g, 6 h). IMP P LIC [EGN] GALLIHNVS AV, laureate, draped and cuirassed bust of Gallienus right, seen from behind / [C]OL IVL INA-D PAR, Hercules standing facing, head right, hand on hip, holding lion-skin and leaning on club. ??. VF, green patina, corrosion roughness obverse and reverse. unpublished reverse ?. 

This piece shares an obverse die with several pieces listed on ACsearch, but the reverse does not seem to be widely published - if at all