Luxembourg: Proof of 500 Francs ND P. 52B(p). This banknote was planned as a part of the 1960s series of banknotes for Luxembourg but it was never issued. This note has no serial numbers and no overprints. It is just made of the underprint and the print of the intaglio plate. The note has watermark and security strip in paper. A highly rare addition to any collection, seldom offered on the banknotes maket. A slight dint at right border. Condition: aUNC.