3 DM buildings, horizontal pair with left lower corner of the sheet and plates no. "3" as well marker cross on margin to facilitate cutting or perforating of panes, centric cancellation" (16) FRANKFURT (MAIN) 1 15.9.56", full original gumming, very well perforated, slight diagonal slight creases in of the right stamp as a matter of form mentions, the corner piece with of the number in perfect condition. Are plates numbers of the building set by itself already very rare, count cancelled examples to the great rarities the Berlin philately, of the 3 DM are only two pieces have become known, of these only the existing in good quality is; especially as a pair extreme decorative - a connoisseurs piece highest order and exhibit for each large Berlin collection, by Michel used even unknown!