Conversation so far:
when did they stop making pennies from copper
The last mostly-copper cents (95% copper metal composition) were produced by the Denver Mint on October 22, 1982.
when was the first penny made
The first U.S. cent was produced in 1787, and the cent has been issued primarily as a copper or copper-plated coin throughout its history.
when was the first dime made
The first dimes minted for circulation did not appear until 1796, due to a lack of demand for the coin and production problems at the United States Mint.

Question: how about a quarter
Self-contained rewrite: when was the first quarter made