Watch List notes:

Luxembourg: 20 Francs ND lilac color trial of P. 54 so it would be P. 54ct but this is not listed in Pick. The issued note was lateron printed in blue color. This note was also prepared for issue but never released. That is why it does not have a Specimen overprint and a normal serial number. A very rare item and seldom seen on the market. Condition: UNC.