Vietnam 1995 Hammer 400d value from Olympic Games set of 4, overprinted SPECIMEN (only 200 produced) unmounted mint
Vietnam 1995 Hammer 400d value from Olympic Games set of 4, overprinted SPECIMEN (only 200 produced) unmounted mint
Vietnam 1995 Hammer 400d value from Olympic Games set of 4, overprinted SPECIMEN (only 200 produced) unmounted mint