1975 Sc 4478-4482 Flowers of the Caucasus 1st Series Scott 4394-4398

1975. Flowers of the Caucasus 1st Series.
Catalogs: Scott 4394-4398, Standard Collection 4478-4482, Mi 4428-4432, Yt 4210-4214.
Condition: MNHOG.
Issued on: December 25, 1975.
Perforation: comb 12 x 11½.
Printing: Photogravure and Recess.
Size: 38 x 52 mm.
Colors: Multicolor.
Face value: 4 Russian kopek; 6 Russian kopek; 10 Russian kopek; 12 Russian kopek; 16 Russian kopek.
Quantity: 7,700,000; 7,300,000; 5,800,000; 5,600,000; 4,700,000.