Do you mean 1,997 quarters, or quarters from 1997, LOL? In any case they're worth 25¢ each. Out of curiosity, because these are readily available in pocket change, what made you suspect they are valuable?
..25 cents. Quarters dated 1965 and later contain no precious metals and unless they were in a special mint set, they are only worth face value.
Value runs from $3.00 to $10.00 in average circulated condition.
Unless there's something that makes it different from the hundreds of millions of other quarters minted that year, 25 cents.
1525
Sorry the first year of issue for US quarter was 1796.