Banque Centrale du Congo-Belge et du Ruanda-Urundi, 500 francs, 15 March 1953, serial number A165365, purple-violet and orange, girl with headscarf top left, falls low centre, value at centre, top left and low right, signatures of Martin and Charles, reverse purple, okapi at centre, value at right and top left and right (Pick 28a, TBB B308a), in ICG holder number 30, very fine and a rare type note