1940 Sc 646I K. A. Timiryazev Scott 782

1940. K. A. Timiryazev.
Catalog numbers: Scott 782, Standard Collection 646I, Michel 751, Yvert 802.
Issued on: June, 1940.
Perforation: line 12½.
Printing: Collotype.
Size: 33.5 X 22.5 mm.
Color: Multicolor.
Face value: 30 Russian kopek.
Quantity: 500,000.