1987 Soviet Space Station "Mir-Soyuz" perf. and imperf. souvenir sheets inscribed in error "Sputnik 1" and "1964 Vostok 1", the latter with serial No. "00062", n.h., v.f., only 550 numbered souvenir sheets issued (the corrected version "Sputnik" and "1951 Vostok" were printed two months after the error was discovered) (Mi. Block 174IA-B, Euro 1,900) (Cat No. 3295var) (Image)

Est.$1,500