1991 Sc 6241-6244. 30th Anniversary of First Man in Space. Scott 5974A-5977A

1991. 30th Anniversary of First Man in Space.
Catalogs: Scott 5974A-5977A, Standard Collection 6241-6244, Michel 6185A-6188A, Yt 5844-5847.
Issued on: 1991-04-06.
Perforation: comb 11¾
Printing: Offset lithography
Size: 32.5 x 32.5 mm
Colors: Pale brown
Face value: 4*25 Russian kopek
Print run: 2,500,000