1875 Sc 27 6th Definitive Issue of Russian Empire Scott 30

1875. 6th Definitive Issue of Russian Empire.
Catalogs: Scott 30, Standard Collection 27, Michel 28x, Yvert 27A.
Issued on: July 1, 1875.
Perforation: frame 14½.
Printing: Typography.
Size: 18.1 x 24.1 mm.
Colors: Blue, orange.
Face value: 20 Russian kopek.
Quantity: 11,000,000.