1975 Sc 4466 Ammonia plant Scott 4382

1975. Ammonia plant.
Catalogs: Scott 4382, Standard Collection 4466, Michel 4416, Yt 4199.
Issued on: October 10, 1975.
Perforation: comb 11¾.
Printing: Photogravure.
Size: 28 x 40 mm.
Colors: Multicolor.
Face value: 4 Russian kopek.
Quantity: 4,700,000.