1977 Sc 4671. All-Union Stamp Exhibition. Scott 4588

1977. All-Union Stamp Exhibition.
Catalogs: Scott 4588, Standard Collection 4671, Michel 4627, Yt 4393.
Issued on: 1977-08-16.
Perforation: comb 11½
Printing: Photogravure
Size: 28 x 40 mm
Colors: Multicolor
Face value: Russian kopek
Print run: 6,300,000