Watch List notes:

WORLD COINS. GREECE. Constantine II (1964-1973), Silver 100-Drachmai (2), 50-Drachmai (2), 1970 (but dated 1967), commemorating the so called "Colonel's coup" of 21 April 1967 (KM 94, 93). One 50-Drachmai toned, otherwise all uncirculated and scare. (4)

Estimate: £200-250