The difference between a proof strike and a business strike are like night and day. If you have a coin shop or even a local coin show in your area, you might want to go to one. I'm sure you will be able to find plenty of proof specimens so that you can compare them to business strikes. Chris
No, but have you heard of the 1975 no mint mark quarter? Worth a bundle, and it doesnt even have to be proof!
@GaryLomax Um what? The US Mint did not issue Quarters with the date 1975. There are fantasy pieces though. http://www.answers.com/Q/what_is_the_value_of_a_1975_us_quarter