Comoro Islands 1978 Courol Bird 50f (Leptosomus Discolor) imperf proof pair in issued colours unmounted mint, as SG 337
Comoro Islands 1978 Courol Bird 50f (Leptosomus Discolor) imperf proof pair in issued colours unmounted mint, as SG 337
Comoro Islands 1978 Courol Bird 50f (Leptosomus Discolor) imperf proof pair in issued colours unmounted mint, as SG 337