3 d. On 25 Pfg imperial yacht, overprint defect \"numeral of value 3 missing\", Gibbs lists 1 unused and 2 used examples with this overprint flaw, mint never hinged with full original gum - unique! Gibbs listed on page 267, Gibbs 5 B, setting 7 to Gibbs, certificate Eichele 2009 (former starting price 900)