The pivotal point in U.S. coinage history, when the composition of circulating currency shifted from primarily silver to clad metals, centers around the mid-1960s. Prior to this period, dimes, quarters, and half-dollars contained a significant percentage of silver, imparting intrinsic value beyond their face value.
The escalation of silver prices, coupled with increasing demand for coinage, made maintaining the silver content in circulating currency economically unsustainable for the U.S. government. The cost of silver exceeded the face value of the coins, leading to potential hoarding and ultimately necessitating a change in the metallic composition to maintain a stable money supply.