2000 Silver Proof Set Already Toning...

Did you not see pictures before you bought it?

If it bothers you, no point in keeping it. There are plenty of 2000 sets that have fully white coins. I don't know if the volara (the foam part) used in the vintage 1999-2009 type holder contributes to the golden toning, as a precaution I removed all of the coins from the OGP and put them in Air-Tites. I've seen plenty of 1999-2001 silver sets that have golden toning at shows, and some later years, too, probably mostly likely stored in a dealer's hot trunk as s/he travels from coin show to coin show. If your e-Bay seller has a return policy, utilize it. No point in keeping something you'll always be unhappy with.

I put the set under my halogen light set up and looked at it with a lit 10x loupe just to get a better idea.

Every coin had a problem. For the sake of education, mine as much as every one else's, I'll post what I found.

The Kennedy half had that creeping milkiness around the rim and also had a black fiber pressed into the metal in front of JFK's chin. There was a small carbon spot below the date.

Jefferson had two black spots, one in his wig and one on his jacket.

White milkiness all over the liberty and behing Roosies head.

Sac had a orangish discoloration on the top wing of the eagle.

The Mass Quarter's obverse had a pale brownish streakiness that reminded me of a woodie cent. The color almost blends in with the Cameo. The reverse was cloudy and white.

The other quarters exhibited white cloudiness in odd configurations.

The one quarter that is attractive, and would be more so were it not for the white which appears near the mint mark and against the word America, is the Virginia one (the back is cloudy around the rim). The obverser on this quarter has a cognac colored toning on the bust and cheek. If the mirrored fields stayed clean and this toned a little more- this would be a desirable coin.

Any clues as to what probably happened to this set? I'm sending it back and getting a "perfect" one. So I'm covered. I just want to know what to do to avoid this.