Posthorn 1951, X+20 Pfg+X, vertical se-tenant, from margin of sheet with bar of dashes, plate flaw II \"right lower flank of the Andreas cross with elongated hole\", cancelled \"Wiesbaden 5 16.2.53\", faultless condition, rare, unsigned, photo expertize H. D. Schlegel BPP (2022) : \"the quality is perfect. \", Michel 1.000.- (free of premium for the plate flaw) - rare in this quality offered!