United States quarters minted in 1964 and earlier are composed of 90% silver and 10% copper. This composition gives them intrinsic value beyond their face value, due to the precious metal content. Later quarters, specifically those minted from 1965 onward, transitioned to a clad composition, consisting of layers of copper and nickel.
The significance of this silver content stems from its inherent value as a commodity and its historical role in coinage. The rise in the price of silver has elevated the worth of these older quarters substantially above twenty-five cents. This precious metal content provides a hedge against inflation and makes them desirable to collectors and investors seeking tangible assets.