A quarter, often known as a quarter dollar, is 1.75 millimetres (0.0689 inches) thick from front to back. From edge to edge, the diameter (the length of a line drawn across the centre of the circular coin) is 24.26 millimetres (0.955 inches).
Each quarter is made up of 8.33 percent nickel and 91.67 percent copper. A quarter is 5.670 grammes in weight. The United States Mint has been producing quarters since 1796. Early quarters were fashioned with silver, which required trimming or shaving of the coin’s edges to accommodate the precious metal.
To preserve the currency from defacement, modern quarters feature a reeded or ridged edge. A quarter is worth 25 cents, but some rare or antique coins can be quite expensive, with some worth hundreds of dollars.
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