Here are some factors that can affect the value of a 1963 US quarter:
* Condition: The condition of a coin is one of the most important factors in determining its value. Circulated coins that have been heavily worn and scratched are generally worth less than coins that are in good condition. Uncirculated coins that have never been released into circulation are generally worth more than circulated coins.
* Variety: There are several different varieties of 1963 US quarters, each with its own value. Some of the more valuable varieties include:
* The 1963-D "No S" quarter, which is missing the mint mark from the Denver Mint.
* The 1963-P "Doubled Die Reverse" quarter, which has a doubled die error on the reverse side of the coin.
* The 1963-P "Lincoln Cent Reverse" quarter, which has the reverse design of a Lincoln cent mistakenly stamped on the quarter planchet.
If you have a 1963 US quarter, it is worth checking its condition and variety to see if it has any additional value beyond its face value of 25 cents.