Kiriwana Yam house 7Ā½d. blue with the postage due overprintĀ - postal charges 6d IXIXIXIXIX - gum toned (as usual for this stamp) with certificate Sergio Sismondo 2015 - a rare stamp, only 800 believed printed and most were used - cat.v. £ 850(Image 1)(Image 2)(Image 3)