El Salvador 1971 Churches 15c imperf proof in blue & black colours only optd SPECIMEN, as SG 1372 unmounted mint
El Salvador 1971 Churches 15c imperf proof in blue & black colours only optd SPECIMEN, as SG 1372 unmounted mint
El Salvador 1971 Churches 15c imperf proof in blue & black colours only optd SPECIMEN, as SG 1372 unmounted mint