1 piastre on 20 Pf medium ultramarine, overprint black blue, official reprint for Philipp Kosack. Outstanding quality with full original gum and only easy rest of hinge, expertized Bothe BPP and Hollmann BPP, as well photo expertize Jäschke Lantelme BPP: \"fresh colours, well perforated, in faultless, unused condition. \" Michel 600.-