Some 1974 quarters are also considered to be rare, and these can be worth significantly more than the standard value. For example, the 1974-D Bicentennial quarter, which was minted in Denver, Colorado, is considered to be a rare coin, and can be worth up to $100.
If you have a 1974 quarter, you can check its value by looking at its condition, mint mark, and rarity. You can also take it to a coin dealer or appraiser to get an accurate valuation.