1990 Sc 6194-6198 Research Submarines Scott 5941-5945

1990. Research Submarines.
Catalogs: Scott 5941-5945, Standard Collection 6194-6198, Michel 6138-6142, Yt 5799-5803.
Issued on: November 14, 1990.
Perforation: comb 12.
Printing: Offset lithography.
Size: 58 x 26 mm.
Colors: Multicolor.
Face value: 5 Russian kopek; 10 Russian kopek; 15 Russian kopek; 25 Russian kopek; 35 Russian kopek.
Quantity: 3,600,000; 3,500,000; 3,300,000; 3,200,000; 3,100,000.