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.

Question: what about a dime
Self-contained rewrite: when was the first dime made