Bank of the Cook Islands
The Bank of the Cook Islands operates within a dual-currency system, notably defined by the coexistence of a limited local currency alongside full circulation of the New Zealand dollar.
Quick Facts
Institutional Identity
Currency issuance in the Cook Islands is managed by the Cook Islands Government Treasury, rather than a traditional central bank, with banknotes historically signed by the Minister of Finance. The Cook Islands dollar circulates at parity with the New Zealand dollar, forming a dual-currency system in which local identity is preserved within a framework of external monetary stability.
Historical Evolution
A defining milestone came with the 1987 banknote series, produced by Thomas De La Rue, which established the islands as one of the most artistically distinctive issuers in global numismatics. This series introduced the iconic 3-dollar denomination—one of the few such notes in the world—featuring the legendary Polynesian scene of Ina and the Shark, a composition that has become one of the most recognisable designs in modern banknote history.
Design Philosophy
The monetary system underwent a critical shift following the 1995 financial crisis, after which large-scale issuance of local banknotes ceased and the New Zealand dollar became dominant in everyday transactions. Despite this, Cook Islands notes remain legal tender and continue to be issued in limited or commemorative forms, including the 2021 polymer 3-dollar banknote produced on De La Rue’s Safeguard® substrate, combining modern security technology with the islands’ iconic visual identity.
For collectors
For collectors, banknotes issued under the Cook Islands system represent a rare intersection of limited circulation, artistic originality and institutional uniqueness. The globally recognised 3-dollar “Ina and the Shark” note, Treasury-issued structure and modern polymer revival create one of the most distinctive and niche collecting fields in contemporary numismatics.
