Czechoslovakia 1977 'Praga 78' Stamp Exhibition (6th issue - Early Aviation) perf set of 5 unmounted mint, SG 2358-62
Czechoslovakia 1977 'Praga 78' Stamp Exhibition (6th issue - Early Aviation) perf set of 5 unmounted mint, SG 2358-62
Czechoslovakia 1977 'Praga 78' Stamp Exhibition (6th issue - Early Aviation) perf set of 5 unmounted mint, SG 2358-62