1988 Sc 5856 Birth Centenary of M.A.Bonch-Bruevich Scott 5643

1988. Birth Centenary of M.A.Bonch-Bruevich.
Catalogs: Scott 5643, Standard Collection 5856, Michel 5804, Yt 5488.
Issued on: February 21, 1988.
Perforation: frame 11½.
Printing: Photogravure.
Size: 28 x 40 mm.
Colors: Buff and black.
Face value: 10 Russian kopek.
Quantity: 2,600,000.