b"99683683P DIE PROOFS: 1963 (SG.1-6) complete set of Pictorials imperforate die proofs in issued colours on thickcard comprising 3d Copra, 5d Aircraft, 8d Map, 1/- Palm Trees, 2/- Native Dukong & 2/3d White Tern.Each value was formerly housed in individual sunken frames within a composite die proof as BW:CK1/6DP(1) - Cat $15,000. Only 10 such Die Proofs were issued. $6,0008,000Colombia684684P PROOFS: 1958 International Geophysical Year (F.J. de Caldas) Issue: Courvoisiers' original trial printings in a completed design, all imperforate and affixed to the official Archival album page [#87], dated 30/12/1950. Unique. (5 items)[The Courvoisier proposal was not proceeded with as the stamp was issued 8 years later, printed by the State Printing Works, Vienna] $400600"