British, Irish and World Banknotes

Banque Nationale du Congo, a set of specimen 500 Makuta (4), 24 November 1967 (2) and 1 September 1968 (2), all with red SPECIMEN overprint, red DE LA RUE seals and a single cancellation hole, one example with light handling and paper clip indentation thus about uncirculated, the remainder uncirculated (4 notes)
TBB B2010cs, ds, Pick 13s £150-£200