United States quarters minted in 1966 did not contain silver. Prior to 1965, these coins were composed of 90% silver and 10% copper. However, due to rising silver prices, the composition of circulating coinage was changed. Coins produced from 1965 onward were made of a clad metal, consisting of outer layers of 75% copper and 25% nickel bonded to a core of pure copper.
The absence of precious metal in the 1966 quarter significantly altered the coin’s intrinsic value. Pre-1965 quarters held considerable worth due to their silver content, making them valuable for collectors and investors. The change in composition reflects a pivotal shift in the history of US coinage driven by economic factors and the need to stabilize the national coin supply.