25 cents. It contains no silver and is only face value. Millions are still in circulation.
If you mean a 1966 American quarter, then none.
The coin is face value.
25 cents.
No U.S. coins dated 1966 have a mint mark. The '66 quarter is worth 25 cents.
On eBay they're sold for $2.
There were no S-mint quarters struck from 1955 to 1967 inclusive and no US coins carried mint marks during the transition from silver to clad coinage in 1965-67.
2 american dollars
The value of a 1966 American quarter typically ranges from face value (25 cents) to a few dollars, depending on its condition and whether it has any errors or unique features. In uncirculated condition or if it has been graded highly, it could be worth more. However, since it is a common coin, most will not exceed a few dollars. For an accurate appraisal, it's best to consult a coin dealer or check recent sales data.
No it's not. The coin has no silver, 1964 was the last year for a US silver quarter.
The coin is still in circulation today and has face value only
Zero. A 1966 U.S. quarter is 0% silver.
In circulated condition, it has no added value. A nice uncirculated one is worth a dollar or two.