New Britain, 1914, G.R.I. 2½d on German New Guinea 20pf Ultramarine, Fraction Bar Omitted, "G.R.I." and value 6mm apart (Gibbs type 6, overprint setting 9), Stephansort town cancel, strong color, Very Fine; with 2013 Gibbs certificate. Scott No. 6 var. SG No. 6a  £9,500 ($13,520). A GREAT NEW GUINEA RARITY WITH ONLY TWO EXAMPLES OF THE G.R.I. 1914 2½D ON 20PF WITH FRACTION BAR OMITTED KNOWN. This stamp was discovered by the Rumsey auction firm and confirmed by Robert Gibbs in the fall of 2013. $0 (Image)