Souvenir sheets issue 1. Central office stamp exhibition the BAG philately watermarked YI, used \"HARZGERODE 30.10.54\", with special feature \"right underneath of the stamp design similar a vertical cut through a Fischskelett; on the paper surface accordingly slightly roughened\", faultless condition, interesting piece of the rare souvenir sheets, photo expertize Weigelt BPP: \"the me presented souvenir sheet is perfect and genuine. \", Michel 1.200.-