How to get rid of milk spots?
ajman
Posts: 1,359 ✭✭✭
Forgive me if this topic has come up ad nauseum, but can anyone tell me or point me in the right direction with a previous thread about the subject, of how to remove milk spots. I have some inexpensive Frankilns that I would like to try this on. Also any tips would surely be appreciated. Thanks guys, Tony.
Beer is Proof that God loves us and wants us to be happy -Benjamin Franklin-
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Comments
if they are inexpensive, you could always dip them, but I don't think it will work
<< <i>I have often wondered. What exactly is a milk spot? (Chemistry behind it) >>
Every winter solstice, run away cows storm the mints and release their dairy onto the planchet piles. No one knows why or how.
<< <i>
<< <i>I have often wondered. What exactly is a milk spot? (Chemistry behind it) >>
Every winter solstice, run away cows storm the mints and release their dairy onto the planchet piles. No one knows why or how. >>
*****Try at your own risk!******
<< <i>PCGS has offered a large prize to anyone who can come up with an effective way of doing this. >>
A hand held cleaning steamer filled with distilled water should remove the spots... Whats my prize
<< <i>I have often wondered. What exactly is a milk spot? (Chemistry behind it) >>
I believe it is mostly chlorine based, suggestive of some kind of bleaching process. I messaged Don Willis asking if the coin sniffer had been unleashed on the milk spotting problem, but have yet to receive a reply. Once you can see em yer screwed.
That was 10 sets of three......Proof, Reverse Proof, and Unc.
As of today, 24 of the 30 coins have milks spots!!!!!!!
Anyone else have that big a problem with theirs??
I wish I sold them within a few months of slabbing....but, I didn't!!
Re-polishing the spot areas on the coin will cause more harm than good, usually.
I believe the spots are "horn silver" (silver chloride). There are chemical procedures
to convert silver chloride back into pure silver. But none of those methods will give
you back the original proof finish. Once the original proof (or satin luster) surface of
the coin is disturbed by corrosion, there is no way to get it back.
Ironically, however, I believe that the formation of milk spots can be pre-empted by
a proper "dipping" of the coin. If the coin is untoned - dipping won't hurt it.
If the coin is toned, the silver oxide coating will prevent the formation of silver chloride.
ammonia will remove spots, but may leave a 'hole' depending on extent of etching/attack
some people have hypothesized that PCGS SAEs have larger incidence because of CA location and salt in air from Pacific ocean
PCGS had made a big deal and offered a reward in a couple of the coin magazines/newspapers - which I suspect was a publicity stunt with no intention of following through as nothing heard from since
...is this problem happen AFTER the coin is slabbed or are there a number of them in original government packages too with the same problem?
<< <i>...is this problem happen AFTER the coin is slabbed or are there a number of them in original government packages too with the same problem?
It is a problem BEFORE and AFTER slabbing.
<< <i>It is a problem BEFORE and AFTER slabbing. >>
...well then, the mint is still on the hook.
<< <i>Sandpaper removes even the larger spots. >>
Thanks for the tip. I am going to go try this right now.