A United States quarter greenback coin produced in 1966 that incorporates silver is the topic of debate. Quarters minted in the US earlier than 1965 have been composed of 90% silver and 10% copper. Due to this fact, figuring out whether or not a 1966 quarter incorporates silver is crucial as a result of the U.S. Mint transitioned to a clad composition (copper-nickel) in 1965. Any 1966 quarter greenback containing silver can be an error coin.
The presence of treasured metallic considerably elevates the coin’s worth past its face worth. The intrinsic worth of the silver content material surpasses the nominal worth. Moreover, such an error coin, exhibiting a composition deviating from the supposed clad materials, holds appreciable attraction for collectors and numismatists on account of its rarity and potential historic significance. The existence of such a coin is topic to authentication and verification.