Luxembourg 1914-18 (ND 1919) P-33b PMG Choice UNC 63 500 Francs
Variety with serial number. The single finest in the PMG population report and an extremely challenging type. Most seen in the marketplace are incomplete, missing serial numbers, signatures or both. This note is as fully issued. The first we have handled and one that is very seldom available for sale in any grade.  PMG mentions "Minor paper pull".
PMG Population in 63: 1 (0 Finer)