25 Pf dark orange impeccable mint never hinged with plate flaw \"left upper corner bevelled\", photo expertize Dr. Hartung: \"the stamp from the left upper corner has the originals gum, has fresh colours, very well perforated and in faultless, mint never hinged condition. (the sheet upper margin has a rest of hinge. ) the plate flaw comes on position 1 and only in a small part of issue before. He has me so far only on the dark orange variety produced and is very rare! \"