|
The 10p coin is minted from a cupronickel alloy of 75% copper and 25% nickel. The 1968 version of the coin weighed 11.31 grams and had a diameter of 28.50 millimetres. In 1992 a smaller version weighing 6.50 grams and with a diameter of 24.50 millimetres was introduced. Apart from the reduction in size, the coin's design remained essentially unchanged. This downsizing took place a year after a similar reform of the five pence coin, and the new ten pence was in fact only a gram heavier and half a millimetre larger than the previously withdrawn five pence. All the older 10p and florin coins were withdrawn from circulation and demonetised from 1 July 1993. With the earlier withdrawal of the 5p and shilling coins, the 10p was the last of the "historical" coin sizes to be withdrawn. Three different obverses have been used so far—from 1968 to 1984 the head of Queen Elizabeth II by Arnold Machin, from 1985 to 1997 the head by Raphael Maklouf, and since 1998 the head by Ian Rank-Broadley. In all cases, the inscription is ELIZABETH II D.G.REG.F.D. followed by the date. Several varieties of the first small coin dated 1992 are known to exist. There are two varieties each of the obverse and reverse, and two of the edge, making five distinct types of which two are scarce. As of December 2005 there were an estimated total 1,587 million 10p coins in circulation. |