ericjmorgan78 ▲ Aug 02, 2024
There are no known significant errors on 1976 quarters without a mint mark (Philadelphia Mint). If the second has a D mint mark behind the ribbon in Washington’s braid you can look at the LIBERTY at the top of the obverse for doubling. You should see splits in the serifs of the lettering. Just as a note… 1976 Washington Quarters were minted in 1975 AND 1976 which is why you will never find a Washington Quarter with a date of 1975.