A typical 1970 quarter weighs 5.67 grams, has outer layers of 75% copper and 25% nickel bonded to an inner core of pure copper. This coin matches the specifications of the Canadian quarter weighing 5.83 grams (+/- 0.04 g.), and chemical analysis revealed it was composed of 80% silver. The $35,000 Mint Error
Is there any silver in a US 1972 quarter?
There is no silver in US quarters minted by the US mint in 1972. In 1965, the US mint transitioned to a bimetal coin, a 75 % copper, 25 % nickel clad on both sides of a copper core. The clad metal was produced by cold roll bonding two strips of the copper-nickel alloy over a single strip of copper .
