Corinth, AR stater.

Head of Athena left, wearing Corinthian helmet
and leather cap, radiate head of Helios behind head, delta 
below.
Pegasus flying left, no koppa below.

Pegasi 393 var (missing Koppa). Possibly from a damaged
die.

The marks around the edge are from the coin being
held in a metal surround, as jewellery.