Aliens flying in formation. Or reeds from the edge of another coin. Pick the one you think is rational.
I concur with a hit from a reeded edge coin. Welcome to CoinTalk Dennis. If you have any questions concerning a coin that you think may have a mint error please create your thread over at the Error Coins forum, not the What's it Worth forum. First learn about the differences between true errors and post mint damage. Worry about value/premiums last. Most issues you find in circulation have very little or no premium at all.
Hello there! It's the result of a coin with a reeded edge hitting the penny REAL hard. Here is an excellent video on the subject on strange marks on coins....