The 1964 quarter is a rare and valuable coin. It was minted in 1964, the same year that the United States Mint began producing coins with the new copper-nickel clad composition. This composition replaced the silver-based coins that had been used since the early days of the United States Mint. The 1964 quarter is a popular coin among collectors due to its rarity and historical significance.The 1964 quarter was minted in both Philadelphia and Denver. The Philadelphia minted coins have a “P” mint mark, while the Denver coins have a “D” mint mark. The coins were minted in both proof and business strike varieties. The proof coins were specially made for collectors and have a higher value than the business strike coins.The 1964 quarter is composed of a copper-nickel clad composition. This composition consists of a copper core with a layer of nickel on the outside. The coins have a diameter of 24.3mm and a weight of 5.67 grams. The obverse of the coin features a portrait of President John F. Kennedy, while the reverse features a heraldic eagle.The 1964 quarter is a rare and valuable coin. The coins in uncirculated condition can be worth up to $50 or more. The coins in proof condition can be worth up to $200 or more. The value of the coins depends on their condition and the mint mark.The 1964 quarter is a popular coin among collectors. It is a reminder of a time when the United States Mint was transitioning from silver-based coins to copper-nickel clad coins. The coins are also a reminder of the legacy of President John F. Kennedy. If you are lucky enough to find one of these coins, it is sure to be a valuable addition to your collection.