Hello All, Any ideas about what happened to this penny from 1960? Some kind of high-school science experiment, or something else? Thanks!
I wasn't paying attention to emails from the Mint, missed the notice about Buffalo subscriptions being cancelled, and then the 2009 Buffalo sold...
Ok, will do. At the very least I'll make sure not to put any proof sets in the basement. One thing I'm curious about though is how coins in...
Ouch... it sounds like this may have been an expensive lesson. ;) I don't think the coins were exposed to fumes, but they were in a basement...
I've been noticing that some items in my proof sets have developed some blurriness... I'm wondering if what I am seeing is oxidation? I will...
Separate names with a comma.
