Unattributed ancient Greek countermarked coin

#2011-1016 in GB1. Obverse looks like it had been poorly restruck, eliminating part of the surface. Reverse is corroded and illegible. To find my ancient Greek coins, search ‘ancient Greek.’ To peruse all my banknotes and coins and skip my other listings, search 'zzz'. Slava Ukrayini! Please note, I am not a dealer nor business, I'm simply selling my collections. I don't buy or trade, nor meet or deliver... all purchases can be picked up in the lobby of my building of residence at Broadview/Pottery.