Sample of a stamp envelope of national mail.Ri.1879. Series "Standard Issue".7 kopecks.Michel No. U25D (stamp, blue, printing ro...

Sample of a stamp envelope of national mail.Ri.1879. Series "Standard Issue".7 kopecks.Michel No. U25D (stamp, blue, printing round D12 mm "State collection" purple, on the front side on the right).The paper is dense (smooth), stamping of the candidate (blue).140x112.- -.-GKP-36134 trays..Electronic copy source: PB