Silver Coins (90%, 40% & 35%)
Silver was removed from United States circulating currency in the 1960’s. The amount of silver in a half-dollar was reduced to 40%. President Lyndon B. Johnson passed the coinage act of 1965, allowing for the production of coins containing no silver, debasing the half dollar, and prohibiting the production of silver coins until 1970. Coins before this era are sought after for their silver content as well as their historical significance.