The one on the left is my first ancient coin which I got in 5th 4 years ago, I recently got the other two at a coin show. Still waiting to get a silver gorgon.
I have always been partial to this issue. Here are mine AMISOS, PONTOS AE 21 OBVERSE: Gorgonian head facing on shield REVERSE: AMI-SOU to left and right of Nike advancing right, holding palm over shoulder; ME monogram to left, VTE monogram to right Struck at Amisos 80 BC 7.6g, 21mm SNG BMC 1190 AMISOS, PONTOS AE 22 OBVERSE: Aegis with head of gorgoneion in centre REVERSE: [A]MI-ΣO[Y] Nike walking right, holding palm tied with fillet over left shoulder; monograms flanking Struck at Amisos 85-65 BC 7.3g, 22mm SNG BMC Black Sea 1180-1182; SNG Cop. 171
Cool pickups, noname ... oh, and Bing => I have a sweet example from Sinope ... wanna see it? PAPHLAGONIA, SINOPE, Æ28 CA. 85-65 BC Diameter: 28 mm Weight: 19.0 grams Obverse: Helmeted head of Athena right Reverse: Perseus standing facing, head left, holding harpa and head of Medusa; at feet, body of Medusa Reference: RG 62; SNG BMC Black Sea 1531 Other: 12 h … brown and black patina