1 piastre on 20 Pf. Medium ultramarine, overprint black blue, official so-called Kosack reprint. Faultless unused luxury item with full original gum and only easy rest of hinge, expertized Bothe BPP, Hollmann BPP and photo expertize Jäschke Lantelme BPP: \"fresh colours, well perforated and in faultless, unused condition. \", Michel 600.-