I purchased a 2011 Silver Proof Set a few months ago and I recall scanning each coin very closely, as they were my first proofs. The only blemish I noticed was a line along the face of the
Jefferson nickel. However, each subsequent time I have pulled them out to look at them, I seem to see another spot or line that I hadn't seen before.
I guess my question is how tight is the seal on these lenses? I'm still stuck in my mother's house for another month or so, and she smokes inside. I'm trying to figure out if smoke is somehow getting to these coins, or if I'm just seeing things I hadn't before.