The U.K. pound coin weighs 9.5 grams as of 2014. Cost and the need to allow for higher denomination coins were the main considerations in deciding the weight of the pound coin, according to the Royal Mint.
The pound coin has a diameter of 22.5 millimeters, and at 3.15 millimeters, it is thicker than other U.K. coins. It is 70 percent copper, 24.5 percent zinc and 5.5 percent nickel. The coin was first introduced in 1983 as a replacement for the pound banknote due to a general decline in purchasing power, which made the coin more appropriate for the £1 unit of currency. In March 2014, the U.K. government announced plans to replace the round pound coin with a 12-sided coin of about the same size in 2017.Learn More
A half-dollar coin weighs 11.340 grams, according to the United States Mint. If the coin becomes underweight due to natural wear or through mutilation, the U.S. Philadelphia Mint Center or the Federal Reserve Bank recollects the coin for melting.Full Answer >
The $20 St. Gaudens gold coins and Liberty gold coins are the largest coins produced by the U.S. Mint and weigh about 1.18 ounces, with the gold comprising 0.97 ounces. The Mint produced Liberty gold coins from 1850 to 1907 and minted St. Gaudens gold coins from 1907 to 1933.Full Answer >
The Saint-Gaudens double eagle is a gold coin produced by the United States Mint from 1907 to 1933. The original value of the coin was $20.Full Answer >
A pound of pennies produced from the design launched in 1982 is worth $1.81, containing 181 pennies at 2.5 grams each. Pennies minted from 1962 to 1982 contain less copper in the plating. Based on a weight of 3.11 grams each, a pound of those pennies is worth about $1.45.Full Answer >