Coin Specifications
| Denomination | Cent | Quarter Dollar |
|---|---|---|
| Composition | Copper Plated Zinc 2.5% Cu Balance Zn | Cupro-Nickel 8.33% Ni Balance Cu |
| Weight | 2.500 g | 5.670 g |
| Diameter | 0.750 in. 19.05 mm | 0.955 in. 24.26 mm |
| Thickness | 1.52 mm | 1.75 mm |
What is the density of a US quarter?
In 1965, the United States Mint removed all silver (density = 10.5 g/ml) from dimes and quarters. The new coins were made of a copper core (density = 8.9 g/ml) plated with nickel (density = 8.9 g/ml). In appearance, size, and volume, the coins remained identical to those minted before 1964 (see the 1932 quarter below).
How big is the edge of a United States quarter?
The coin has a 0.069-inch (1.75-mm) reeded (or milled) edge. Owing to the introduction of the clad quarter in 1965, it was occasionally called a “Johnson Sandwich” after Lyndon B. Johnson, the US President at the time. As of 2011, it cost 11.14 cents to produce each coin.
What is the composition of a Washington quarter?
For a list of Washington quarter coins, see Washington quarter. The current clad version is two layers of cupronickel, 75% copper and 25% nickel, on a core of pure copper. The total composition of the coin is 8.33% nickel, with the remainder copper. It weighs 0
What does the reverse of the US quarter look like?
The obverse (heads) shows the profile of George Washington used on the quarter since 1932. The reverse (tails) features five designs each year depicting national parks and sites from the 50 states, District of Columbia, and territories.
Where is the mint mark on a United States quarter?
The mint mark on the coin is located on the reverse beneath the wreath on which the eagle is perched, and will either carry the mint mark “D” for the Denver Mint, “S” for the San Francisco Mint, or be blank if minted at the Philadelphia Mint.
