30 Mk. Posthorn blackish brown, 5 horizontal pairs as scarce properly franked multiple franking on international letter from LEIPZIG 29.6.23 to Schwyz (Ank. Cancellation), photo expertize Winkler BPP: "genuine, 2. Pair from left corner perforation fault, otherwise all pairs very well perforated, letter above cut in and slight transport traces, in total good condition", Michel 1,000.- plusplus