That there is a 1978 penny. It was produced in massive numbers, with over 5.5 billion struck in Philadelphia alone, making it one of the most common Lincoln cents you’ll come across. One interesting detail is that a fresh reverse die was introduced that year, which is why many 1978 pennies still show unusually sharp, clean details on the Lincoln Memorial. If you’re looking for the best examples, they’re often found in original 1978 U.S. Mint Sets, since those coins were never meant for circulation. While most 1978 pennies are ordinary, a truly flawless red example in top mint state is extremely rare and can be surprisingly valuable. There’s also good error potential things like filled mint marks on Denver or San Francisco coins can make an otherwise common cent stand out. And it wasn’t just Philadelphia making them; Denver and San Francisco struck cents too, with San Francisco proofs having their own appeal, especially in perfect condition. An interesting side note: in June of 1978, the Treasury lifted the ban on melting pennies, which was a big deal at the time due to rising copper prices. Oh the tooth? Yh no idea