90%
Barber quarters are made of 90% silver and 10% copper. The silver weight would be 5.625 grams.
If it's 1922, that makes it a Mercury dime, not a Barber, though the silver content is the same either way. Dimes at that time contained 90% silver, which was 2.25 grams.
All pre-1965 US quarters and dimes are 90% silver.
US quarters weighed 6.25 grams and were 90% silver (the balance was copper); the Actual Silver Weight was thus 0.1808 troy ounces of silver
Yes, original silver quarters minted before 1965 are valuable for their silver content. These coins are composed of 90% silver and 10% copper, making them sought after by collectors and investors for their precious metal value.
All US quarters minted before 1965 contain 90% silver. There are no higher silver content varieties out there.
While the price of silver is volatile, lately silver dimes have been going for about $2, quarters for $5 and half-dollars for $10. This is just for silver content though, the numismatic value of some coins are many times greater than their silver bullion content.
Barber halves (as well as Walking Liberty, Franklin, and 1964 JFK halves) weigh 12.5 gm when unworn and are composed of 90% silver, 10% copper. That gives them a pure silver content of 11.25 gm. However, many Barber halves are worth more as collectibles than for their silver content. Look for a mint mark under the eagle and then check the values site linked below.
The last year for circulating silver U.S. dimes and quarters was 1964, while half dollars continued with a reduced silver content until 1971. Meanwhile in Canada, their dollars and halves were silver up through 1967, with quarters and dimes at a reduced content into 1968.
First of all, silver U.S. quarters dated 1964 and earlier are 90% silver, not pure. As far as 1964, it's an extremely common date, currently worth about $4 for the silver content.
About $8.50 at the time of writing just for the silver content.
Standing liberty quarters were made from 1916- 1930. Barber quarters were made from 1892-1916. The design of Liberty on a Barber quarters shows only the head while Standing Liberty quarters show her whole body. The tails sides are also different.