Grand-Duche de Luxembourg, specimen 50 Francs, 6 February 1961, serial number A 000000, also a specimen 100 Francs, 1 September 1963, serial number A 000000, red SPECIMEN overprints, two cancellation holes each, uncirculated (2 notes)
TBB B334as, B335as, Pick 51s, 52s £180-£240