2015 Sc 1954-1957 Service dog breeds Scott 7634a-d

2015. Service dog breeds.
Condition: MNHOG.
Catalogs: Scott 7634a-d, Standard Collection 1954-1957, Michel 2171-2174.
Issued on: May 28, 2015.
Size: 65 x 32.5 mm.
Perforation: comb 13½.
Printing: Offset lithography.
Colors: Multicolor.
Face value: 16 ₽; 18 ₽; 20 ₽; 26.50 ₽.
Quantity: 108,000; 108,000; 108,000; 108,000.