Money weights in grams?
The 10p coin is minted from an 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previously withdrawn five pence.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were withdrawn from circulation and demonetised from 1 July 1993.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
Current British general circulation coins are dimensioned as follows - 1 Penny - 20.32 mm diameter, 1.65 mm thick, weigh 3.56 grams and are made from copper plated steel. The edge is plain. 2 Pence - 25.9 mm diameter, 2.03 mm thick, weigh 7.12 grams and are made from copper plated steel. The edge is plain. 5 Pence - 18 mm diameter, 1.7 mm thick, weigh 3.25 grams and are made from 75% copper and 25% nickel. The edge is milled. 10 Pence - 24.5 mm diameter, 1.85 mm thick, weigh 6.5 grams and are made from 75% copper and 25% nickel. The edge is milled. 20 Pence - 21.4 mm diameter, 1.7 mm thick, weigh 5 grams and are made from 84% copper and 16% nickel, and are seven sided. The edge is plain. 50 Pence - 27.3 mm diameter, 1.78 mm thick, weigh 8 grams and are made from 75% copper and 25% nickel, and are seven sided. The edge is plain. 1 Pound - 22.5 mm diameter, 3.15 mm thick, weigh 9.5 grams and are made from 70% copper, 24.5% zinc and 5.5% nickel. The edge is milled with incuse lettering or ornamentation. 2 Pound - 28.4 mm diameter, 2.5 mm thick, weigh 12 grams and are bimetal made from 76% copper, 20% zinc and 4% nickel in the outer ring, and the centre is 25% nickel and 75% copper. The edge is milled with incuse lettering. 5 Pound - 38.61 mm diameter, 2.5 mm thick, weigh 28.28 grams and are made from 75% copper and 25% nickel. The edge is milled with an inscription. Intended as a souvenir, but occasionally seen in circulation.
Ancient Babylonians did not have money. Instead they used weights of things for commerce. Weights of barley were used, as were weights of silver. The weight they used was the shekel, and the first syllable of that word comes from an Akkadian term for barley. There is a link below to an article on money, which has a history section.