Grand-Duche de Luxembourg, specimen for an unissued type of 20 Francs, ND (1982), serial number A000000, red specimen overprint and single cancellation hole, in PCGS holder 67 PPQ, superb gem uncirculated, the same design as the 1966 issue but in purple, often mistaken for a colour trial, rare
TBB B343as, Pick not listed (incorrectly stated as 54s on PCGS holder) £150-£200