1979 Sc 4870 Radioamateur Satellites Scott 4733

1979. Radioamateur Satellites.
Catalogs: Scott 4733, Standard Collection 4870, Michel 4820, Yt 4576.
Issued on: February 23, 1979.
Perforation: comb 11½.
Printing: Photogravure.
Size: 28 x 40 mm.
Colors: Multicolor.
Face value: 4 Russian kopek.
Quantity: 7,300,000.