50 Rupias

Banco Nacional Ultramarino was the Portuguese colonial bank of issue, and by 1906 it was printing notes for multiple overseas territories simultaneously — Mozambique, Angola, Cape Verde, São Tomé, Portuguese India, and Timor among them. The P#18 50 Rupias belongs to the Portuguese India series, denominated in rupias rather than escudos or milreis because the currency in Goa, Damão, and Diu had long been pegged to the Indian monetary system rather than to Lisbon's.

Bradbury Wilkinson handled the security printing out of their New Malden works in Surrey. Their intaglio work for colonial issuers during this period is generally consistent and technically capable, though the Portuguese India notes are among the more obscure of their colonial contracts.