Lot 42249 – 1929, Justo Rufino Barrios, De La Rue handpainted unadopted

1938-40, group of 17 ABN die proofs affixed to single brown cards and displaying die number in an upper sheet margin, including 938-39 Definitive issue complete set of nine and the 1940 Coffee airmail set of five in issued colours, additionally the former with one green proof of the frame and the latter with two green and black proofs with blank value tablets.