Banque Nationale du Congo, a set of specimen 50 Makuta (6), 24 November 1967 and 1 September 1968, serial number A 000000, red SPECIMEN overprint and DE LA RUE seals, single cancellation hole, 21 January 1970, serial number A 000000, perforated SPECIMEN OF NO VALUE, 21 January 1970 (3), serial number A 000000, single red specimen overprint, the perforated example has minor glue residue on obverse thus about uncirculated, the remainder uncirculated (6 notes)
TBB B208as, cs, ds, es, Pick 11s £180-£220