If you mean the eagle on the back is upside-down compared to the face on the front, it's supposed to be like that, and not just 1974, but all Washington quarters.
If the coin is golden and slightly larger than a quarter, and says 1974-1977, then it's a dollar coin from 2016, and it's worth one dollar.
1974 S (Proof) Quarter is worth $1.50.
CoinTrackers has estimated the 1974 D Washington Quarter value at an average of 25 cents
One dollar.
.2333
Cent, nickel, dime, quarter, half-dollar, dollar.
Cent, nickel, dime, quarter, half-dollar, dollar.
If the coin is golden and slightly larger than a quarter, and says 1974-1977, then it's a dollar coin from 2016, and it's worth one dollar.
1974 S (Proof) Quarter is worth $1.50.
The mint mark on the 1974 Eisenhower silver dollar is located on the reverse side of the coin, just to the right of the eagle's tail. If the coin was minted in Philadelphia, it will have no mint mark. If it was minted in Denver, it will have a "D," and if it was minted in San Francisco, it will have an "S."
This error is called an "Inverted Overprint" and can retail anywhere from $150 to $400 depending on the bill's condition.
CoinTrackers has estimated the 1974 D Washington Quarter value at an average of 25 cents
One dollar.
.2333
It's just one dollar.
1974
One dollar.