1927 Sc 19 Flock of Sheep Scott 23

1927. Flock of Sheep.
Catalog numbers: Scott 23, Standard Collection 19, Michel 23A, Yvert 23.
Issued on: September, 1927.
Perforation: line10½.
Printing: Lithography.
Colors: Multicolor.
Face value: 18 Russian kopek.