1 Penny dark rose, Queen Victoria, engraved Perkins, Bacon & Co., plate 139, watermark 3I Large Crown, horizontal block of twelve, letters PA/RD, circular "YOUGHAL MY 13 72" datestamp. Contrary to British postal rules, each cancellation covers a block of four rather than cancelling every stamp individually. Perfect perforations all round with small perforation irregularity at top of PA and insignificant corner crease on RD, fresh colours, very good condition, unsigned, photo certificate Albert Louis BPP (2024) "genuine and in very fresh state of preservation", Mi. 500- (SGNo. 43), largest recorded multiple of MiNr. 16 from plate 139, ex Ake Rietz collection.