1875 Sc 28 6th Definitive Issue of Russian Empire

1875. 6th Definitive Issue of Russian Empire.
Catalogs: Standard Collection 28.
Issued on: 1875.
Perforation: frame 14½.
Printing: Typography.
Size: 18.1 x 24.1 mm.
Colors: Carmine, green.
Face value: 30 Russian kopek.