Under magnification it looks like copper chipping. Is it considered attached lamination? It’s a 1935 D
Here’s the 3rd one.
Looks like maybe some die chips?
Tittellee Winks damage on the rim. PMD
Appears to be a flake of metal. Some may consider it a small delamination, or possibly a small shaving that was struck into this coin.
A menagerie of U.S. Mint medals
Looks like a random die chip.... Might be easily detached, but would leave some evidence behind. Cheers, RickO