10 000 Reis Bolama seal

The Banco Nacional Ultramarino served as the colonial note-issuing bank for Portuguese overseas territories, and this 10,000 Réis note carries the Bolama seal — identifying it for circulation in Portuguese Guinea, whose administrative capital at the time was Bolama rather than Bissau. That distinction matters: notes of the same Bradbury Wilkinson printing were overprinted or sealed for different territories, and the Bolama designation makes this the rarer variant within what was otherwise a shared colonial issue.

By 1909, Bolama was already beginning its slow administrative decline; Bissau would eventually supersede it as capital in 1941.