First you have to determine whether the coin is silver or just silver in color.
If the coin has no mint mark or a D next to the tail of Washington's wig, it's made of copper-nickel and worth 25 cents. There were several billion minted in honor of the Bicentennial. Most were "collected" (or at least saved) so there are millions of uncirculated ones available for 50 cents to a dollar.
Those with an S mint mark were made as both copper-nickel and 40% silver sandwich coins. The core of the latter coins is 79.1% copper and 20.9% silver. The outer layers are 80% silver and 20% copper. All S-mint quarters were sold in collectors' sets and not released for circulation. Prices as of 10/2009 were as follows:
Uncirculated, 40% silver : $2.25 to $40.
Proof, copper-nickel : $2.50-$10.
Proof, 40% silver : $2.30-$13.
A 1776-1976 no proof quarter dollar worth in 2012
A US quarter has a face value of 25 cents.
A 1765 US quarter does not exist.
The first US quarter was struck in 1796.
No US quarters were struck in 1922. The US did not make ANY quarters dated 1922.
roughly 90 us dollars.
No US quarters were made in 1810.
No US quarters were minted in 1817.
Bermuda's currency is linked to the US dollar. The coins are the same size and value as US coins and exchange one-for-one, so a Bermudan quarter is worth the same as a US quarter.
About 25 US cents.