New Zealand twenty-cent coin pegged to the British pound, was changed to a decimal dollar at a rate of two dollars to a pound. Therefore, 20 cents was worth a tenth of a pound. The 20-cent coin replaced the florin coin which had been worth two shillings, or a tenth of a pound. Like the florin, the new 20-cent coin was made of cupronickel, 28.58 mm in diameter, 11.31 grams in weight, and had 100% edge milling. The 20-cent coin retained the presence of a kiwi on the reverse of the florin, albeit in a different design. The original obverses of 20-cent coins depicted
Twopence (British pre-decimal coin) Chancellor of the Exchequer, that so large a part of the copper coinage must be taken out of circulation that it was worth introducing a whole new coinage which would be "much more convenient and agreeable in use". These new coins were minted in bronze, and their specifications were no longer compelled by the onerous requirement that their face value should match the value of the base metal used to make the coin. These new coins were introduced in 1860, and a year later the withdrawal of the old copper coinage began. The twopence was minted in copper, with a