Watch List notes:

GREECE: 500 Drachmas (1988) in silver (0,900) commemorating the 28th Chess Olympiad with White Tower and inscription "ΕΛΛΗΝΙΚΗ ΔΗΜΟΚΡΑΤΙΑ". Inside slab by PCGS "PR 69 DCAM / 28th Chess Olympics". Top pop in both companies. Cert number: 43661747. (Hellas CD.24).