1950 Sc 1497-1499 Ivan Aivazovsky Scott 1529-1531

1950. Ivan Aivazovsky.
Catalogs: Scott 1529-1531, Standard Collection 1497-1499, Michel 1522-1524.
Issued on: December 9, 1950.
Perforation: line 12½.
Printing: Typography.
Face value: 40 Russian kopek; 50 Russian kopek; 1 ₽.