You might want to check that 1964 quarter to see to see if it has a "D" mint mark for the Denver mint. If it does,the reverse side might have what's called a Type "C" reverse design which is rare and could be worth a lot of money. If you check the "Modern US Variety & Error coins" forum on this site you can search to determine what to look for in a Type "C" reverse. Just thought I'd let you know before you spend it or sell it for the silver content.