One Dollar 1990 Treaty of Waitangi, Coin from New Zealand - detailed information

When decimal currency was introduced in New Zealand on 10 July 1967, there was no new circulating denomination with the size and specifications of the old one crown piece, in which only commemorative coins had been issued; the new (large) fifty cents were equivalent in value but not in size. New Zealand issued crown-sized commemoratives with the specifications of the old crown, based on the British pre-decimal Crown. Until the introduction of the smaller circulating dollar coin in 1990, these coins had a one dollar denomination; later issues were denominated as five dollars.

These coins are legal tender but are not intended for circulation.

The 1990 large one dollar coin commemorates 150 years since the signing of the Treaty of Waitangi. These coins were issued in the 150th Anniversary mint sets with a mintage of 10,000 and also separately, boxed or in labelled coin flips. They were struck by the Royal Australian Mint in Canberra and were designed by Horst Hahne. There was also an "off-metal" proof minting in silver.

This was the last large one dollar issued in the "crown" format. Circulating small one dollar coins were introduced in 1990, replacing one dollar banknotes. In later years, the large "special" one-year-type coins issued in mint sets were denominated as five dollars.