Three old pence = 1/80 pounds = 1.25 pence.
There was no New Zealand 1949 Threepence minted.
Such a coin does not exist. The Threepence was not introduced into the British currency until about 1550.
The British Threepence is part of a redundant currency that was withdrawn and demonetised in 1971. It no longer has an exchange rate with other currencies.
There were no Australian Threepences minted prior to 1910.
Modified coins have no collector value. The ring may have some value.
Any collector value would depend on the country of origin and the condition of the coin.
Modified coins have no collector value. The ring may have some value as a piece of jewellery.
The only British 1831 Threepence issued was the Maundy Threepence. A British 1831 Maundy Threepence (FDC), uncirculated and in absolute mint condition could fetch up to £40 GBP. If it has been circulated but still in good condition, it might fetch up to £20 GBP. A reputable coin dealer will be able to give a more accurate valuation.
There are 2 Halfpennies to the Penny. There are 3 Pennies to the Threepence. There are 6 Halfpennies to the Threepence.
The Royal Mint produced no British Threepences from 1801 to 1833 inclusive.
in 1970 3p then in 1972 when decimalised 5 new pence!
There are six Halfpennies in a Threepence.