Hello, I'm an expert in numismatics, which is the study and collection of coins. When it comes to the value of a 1966 quarter, there are several factors to consider, including its condition, rarity, and whether it has any special features.

Firstly, the 1966 quarter is a common coin and was produced in large quantities. The mintage (the number of coins produced) for this year is quite high, which generally means it's not considered rare. However, there are some variations that can make a 1966 quarter more valuable. For example, if it's an error coin with a minting error, or if it's in uncirculated condition, it might be worth more to collectors.

The composition of the quarter also plays a role. From 1965 to 1970, U.S. quarters were made of a different metal composition (40% silver) compared to earlier and later years. This could potentially increase the value, especially if the coin is in good condition.

Lastly, the grade of the coin, which is a measure of its condition, is crucial. A coin in mint condition or proof will be worth more than one that is worn or damaged.

To get an accurate value, it's best to have the coin appraised by a professional coin dealer or numismatist. They can take into account all the factors and give you a more precise estimate.

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1966 Washington Quarter. ... Value: As a rough estimate of this coins value you can assume this coin in average condition will be valued at somewhere around 25 cents, while one in certified mint state (MS+) condition could bring as much as $33 at auction.read more >>