1939 Sc 613-620 Sanatoriums in Caucasus Scott 749-756

1939. Sanatoriums in Caucasus.
Catalog numbers: Scott 749-756, Standard Collection 613-620, Michel 718-725.
Issued on: December, 1939.
Perforation: line12½.
Printing: Collotype.
Colors: Multicolor.
Face value: 5 Russian kopek; 10 Russian kopek; 15 Russian kopek; 20 Russian kopek; 30 Russian kopek; 50 Russian kopek; 60 Russian kopek; 80 Russian kopek.
Quantity: 500,000; 500,000; 500,000; 500,000; 500,000; 500,000; 300,000; 300,000.