Project Printing Secrets (Closed Letter), approved.Ri.01/01/1890.Series "Standard Issue".10 kopecks.Michel No. K3 (handwritten t...

Project Printing Secrets (Closed Letter), approved.Ri.01/01/1890.Series "Standard Issue".10 kopecks.Michel No. K3 (handwritten text, on the back "No. 50, approved sample. On December 1, 1889, a clerk (signature)", printing round D12 mm "State collection" Violet, on the front in the lower right corner, printing round d35 mm "People'sCommissariat of Posts and Telegraphs. Postal and Teligraphic Museum, on the back).Thin cardboard (gray), printing printing (blue), manuscript.142x83.- -.-GKP-36187 trays..Electronic copy source: PB