• Banco Nacional Ultramarino Currency & Banknote Values

Banknote Book® Price Guide

coin-icon-tr
Values / World Currency / Portuguese Guinea / Banco Nacional Ultramarino

Sort by

Sponsor

shop Stacks Bowers Auctions

Sponsor

shop CAC

Sponsor

shop

Sponsor

shop David Lawrence Rare Coins

Sponsor

shop Whitman

The Banco Nacional Ultramarino series of Portuguese Guinea in the World Currency contains 310 distinct entries. On 16 May 1864, the Banco Nacional Ultramarino (National Overseas Bank, BNU) was established in Lisbon as a private issuing bank for Portugal’s overseas territories. Over time, the BNU would

The Banco Nacional Ultramarino series of Portuguese Guinea in the World Currency contains 310 distinct entries.

On 16 May 1864, the Banco Nacional Ultramarino (National Overseas Bank, BNU) was established in Lisbon as a private issuing bank for Portugal’s overseas territories. Over time, the BNU would issue notes in Angola, Cape Verde, Macau, Mozambique, Portuguese Guinea, Portuguese India, São Tomé and Príncipe, and Timor.

The BNU’s branch in Bolama, Portuguese Guinea opened in 1903.

In 2001, the BNU was nationalized when it merged with Caixa Geral de Depósitos, the government-owned savings bank, although it continues operations today under the Banco Nacional Ultramarino brand in Macau, where it continues to issue Macanese pataca banknotes. For more information, visit www.bnu.com.mo.

For signatures appearing on Portuguese colonial notes, see Banco Nacional Ultramarino, a separate chapter.

See More See Less

Sponsor

shop Stacks Bowers Auctions

Sponsor

shop CAC

Sponsor

shop

Sponsor

shop David Lawrence Rare Coins

Sponsor

shop Whitman

Sponsor

shop Great Collections

Available on Greysheet Marketplace

View All
1941-S 25c MS

Auction Ends: 5/26/2026

1919-D 1c MS RB

Auction Ends: 5/26/2026

1952 50c PR CAM

Auction Ends: 5/26/2026

1865 2c Plain 5 MS BN

Auction Ends: 5/26/2026

Dealer Directory

View All Dealers

Greysheet News

View All News
Weekly World Mint Coinage: May 21, 2026
Weekly World Mint Coinage: May 21, 2026
5/21/2026

New coins from Australia, South Africa, and Curacao.

Liberty Gets a Classic Makeover: The Half Eagles of 1834-1838
Liberty Gets a Classic Makeover: The Half Eagles of 1834-1838
5/18/2026

These coins were struck for five years—between 1834 and 1838—and they were struck every year at the Philadelphia Mint.

Greysheet Live at CSNS: John & Patrick Discuss Pricing on the Newman Portal [Video]
Greysheet Live at CSNS: John & Patrick Discuss Pricing on the Newman Portal [Video]
5/18/2026

The questions everyone is asking about how pricing is made at the Greysheet.

Map icon

DAVID LAWRENCE RARE COINS

Map icon

The Police Athletic League (PAL) Building