Essay postage.RSFSR.1920?.The letters "RSFSR" in Oval.5 (rub.).CMS-GK No. GKN17 (black-blue, purple stamp "Gos.k." on the back)....

Description	Essay postage.RSFSR.1920?.The letters "RSFSR" in Oval.5 (rub.).CMS-GK No. GKN17 (black-blue, purple stamp "Gos.k." on the back).The paper is simple (with glue), lithographic printing.19.5x28 mm.- -.-Frames "Provisional Government.RSFSR »GKP-32256..Electronic copy source: PB

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