2 Groschen small breast shield, gray ultramarine, special feature "strength vertical defective or badly placed perforation - approximate 3 mm to the right shifted by which design of the stamp", two examples as properly franking on registered letter the 2nd weight step, cancelled by Saxony dual circuit cancel "Cainsdorf 13 Feb 72", addressed to Werdau, through the upper stamp goes a horizontal crease otherwise very fine, very rare - particularly since on document, expertized Hennies BPP and photo expertize Krug BPP "so strong with defective or badly placed perforation breast shield stamps are - particularly since as multiple franking - very rare. "