St Vincent 1978 75th Anniversary of First Flight perf set of 4 opt'd Specimen unmounted mint, as SG 566-69
St Vincent 1978 75th Anniversary of First Flight perf set of 4 opt'd Specimen unmounted mint, as SG 566-69
St Vincent 1978 75th Anniversary of First Flight perf set of 4 opt'd Specimen unmounted mint, as SG 566-69