1926 Sc 0137 Red Army soldier Scott X

1926. Worker. This stamp had never been in normal postal circulation, but was sold at philatelic stores, also exist with CTO cancellations.
Watermark: 11b/170.
Catalogs: Scott not listed, Standard Collection O137.
Issued on: July, 1926.
Perforation: Imperforate.
Printing: Typography.
Face value: 7 Russian kopek.