 Alternatively, many retailers rounded all their prices to the nearest 5 cents to avoid the issue entirely—so a New Zealand shopper often encountered products for sale at prices like $4.95.On 11 February 1991, $1 and $2 coins were introduced to replace the $1 and $2 notes in circulation.These coins were minted in aluminium bronze, and were the first New Zealand coins to be minted to metric specifications.