With all the talk of RCM bullion and it's milkspotting issues I haven't really heard anything mentioned regarding the mint's reverse proof bullion issues, the coins with the frosted finish and their proneness to developing them. Unfortunately a Titanic privied Maple I dug out of a box recently has developed a strange looking brown spot, which has ruined the look of the coin a bit. Has anyone seen this before and/or experienced the same thing? It doesn't look there is really a lot that can be done about removing it?
It's not a milk spot, it's just toning, I believe it's from that cardboard holder, if you look carefully you'll see that exactly in that area there's small pieces of cardboard coming out and touching the coin. It could be removed but you may damage the coin doing it. Take it out and store in airtites not those cardboard flips.
Any reverse proof can develop milk spots on their proof like surfaces. I have had it happen to RCM, Perth, and even a 2013 ASE reverse proof that was in the West Point 2 coin set. (The spotting was in its infancy, but still noticeable) Personally I like many of the RCM coins, but won`t keep any of them due to their horrible track record of spotting.
I would highly advise you not to do that. You undoubtedly did more damage to the coin than that spot was creating.
Maybe it was bought as bullion only and not as a collector item. Then if the weight hasn't been affected, then his value hasn't either. If he bought it for other than a bullion investment, partially or split evenly, he did himself a disservice. Of course you never want to start bad habits, they may come back and bite you.
Even then...he got a great deal as this issue has pretty good collector value that he could have hurt.
