1950 Sc 1469-1471(2) Forces of democracy and socialism are invincible! Scott 1488-1490

1950 (1957 second printing). Forces of democracy and socialism are invincible!
Catalog numbers: Scott 1488-1490, Standard Collection 1469-1471(2), Michel 1491II-1493II, Yvert 1474-1476.
Issued on: August 4, 1957.
Perforation: line 12¼.
Printing: Collotype.
Size: 45 x 30 mm.
Color: Multicolor.
Face value: 40 Russian kopek; 50 Russian kopek; 1 ₽.
Quantity: 5,000,000; 1,000,000; 500,000.