which us quarters are silver

[Mario]

Well, while the provided context is a thrilling tour of a coin dealer's website menu, it's about as useful for answering your question as a chocolate teapot. So, allow me to step in with the actual information.

The magic number you need to remember is 1964. If you're sifting through your pocket change or an old jar of coins, any U.S. quarter dated 1964 or earlier is the silver treasure you seek. These old-school quarters are composed of 90% silver and 10% copper. Finding one in circulation is a rare treat, so check those dates carefully!

In 1965, the U.S. Mint performed a great monetary switcheroo. Due to the rising price of silver, they changed the composition to a copper-nickel clad sandwich. The easiest way to spot the difference, besides the date, is to look at the coin's edge. A pre-1965 silver quarter will have a solid silver stripe. A quarter from 1965 or later will reveal a tell-tale line of copper.

Of course, there are a few exceptions for coin collectors. Some Bicentennial quarters (dated 1776-1976) were specially struck for collectors in 40% silver. Additionally, since 1992, the U.S. Mint has produced special silver proof sets for collectors that contain quarters with the classic 90% silver composition. However, you're highly unlikely to get one of these as change from your morning coffee.