1991 Sc 6219 75th Birth Anniversary of Paul Keres Scott 5964

1991. 75th Birth Anniversary of Paul Keres.
Catalogs: Scott 5964, Standard Collection 6219, Michel 6163, Yt 5823.
Condition: MNHOG.
Issued on: January 7, 1991.
Perforation: frame 11½.
Printing: Photogravure.
Size: 40 x 28 mm.
Colors: Multicolor.
Face value: 15 Russian kopek.
Quantity: 1,800,000.