1939 Sc 579 Statue on USSR Pavilion Scott 714

1939. Statue on USSR Pavilion.
Catalog numbers: Scott 714, Standard Collection 579, Michel 693, Yvert 709.
Issued on: May, 1939.
Perforation: line 12½.
Printing: Collotype.
Size: 33 x 22 mm.
Color: Black blue, red.
Face value: 30 Russian kopek.
Quantity: 530,000.