Watch List notes:

British Banknotes

British Armed Forces, 1 Shilling, ND (1946), 1st Series, NAAFI overprint (type 1), no serial number, original good fine to about very fine, an extremely rare earlier type of NAAFI overprint, and one of only a few examples know for any denomination
Pick M10b for similar, Van Elmpt E-10 for similar £1,400-£1,800