1 Avo Banco Nacional Ultramarino

Bradbury, Wilkinson printed this note for Macau during the Second World War, a period when Japanese forces had occupied the surrounding Pearl River Delta but — uniquely among European territories in the region — left the Portuguese enclave itself alone, owing to Portugal's wartime neutrality. That political anomaly kept the Banco Nacional Ultramarino functioning and its currency in local circulation when nearly every neighboring monetary system had collapsed under occupation.

At 73 × 41 mm, this is among the smallest-format notes BNUever issued for any of its territories. The 1 Avo denomination was fractional even by Macanese standards.