Such a coin does not exist.
The 5 and 10 New Pence coins were first introduced in 1968.
The 50 New Pence coins were first introduced in 1969.
The 1/2, 1 and 2 New Pence coins were first introduced in 1971.
50 pence.
3 cents
You do not specify which coin. The 1 and 2 New Pence coins are still potentially in circulation, so are worth 1 and 2 Pence respectively. The Half, 5, 10 and 50 New Pence coins have long since been withdrawn from circulation and demonetised. Unless they are in mint condition, they are worth little or nothing.
2 pence
It's worth nearly two pence for the copper.
$0.47
If they have been circulated, all British "New" Pence coins are worth whatever is indicated on them.
10p coins were first issued in 1968. In circulated condition they're only worth face value, about 15 cents as of 04/2009
Four New Zealand pence in 1947 had the purchasing power of about $1.05 NZD today.
The value of a 1975 2 New Pence coin featuring Queen Elizabeth II can vary based on its condition and demand among collectors. Generally, these coins are not highly valuable and can be worth anywhere from a few pence to a couple of pounds. However, if the coin is in uncirculated or excellent condition, it might fetch a higher price. For precise valuation, it's best to consult a coin dealer or a numismatic catalog.
The British currency in 1960 was Pounds, Shillings and Pence. There were 12 Pennies in a Shilling and 20 Shillings in a Pound. The first stage of the conversion to decimal currency commenced in 1968 with the introduction of the 5 and 10 New Pence coins, with the 50 New Pence coin introduced in 1969. The official date of the changeover was the 15th of February, 1971, when the remainder of the coins were introduced. There were 100 New Pence in a Pound.
Before the British currency reform, there were 12 pence in a shilling, and 20 shillings in a pound, so there were 240 pence in a pound. That system was dropped in 1971, when the UK converted to "new pence" (worth 2.4 old pence), making 100 new pence per pound. The shilling was replaced with a 5 new pence coin (worth the same amount as the former shilling, 1/20th of a pound).