60 Escudos

The Banco Nacional Ultramarino was the Portuguese colonial note-issuing authority for multiple overseas territories simultaneously, and the 60 Escudos denomination is distinctly awkward — sixty is not a natural monetary unit, and its existence reflects the BNU's habit of issuing denominations calibrated to local wage and commodity structures in Portuguese Guinea rather than metropolitan convenience.

Thomas De La Rue produced the series to their usual intaglio standard. The single watermark security reflects what was considered adequate for a colonial peripheral circulation in the late 1950s, before independence pressures accelerated currency reform across Portuguese Africa.