Author Topic: white spots  (Read 1482 times)

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Offline Mak007

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white spots
« on: July 12, 2014, 05:46:58 PM »
I have 1997 China Panda Silver Colorized 2 pc Set 1 Oz and 1/2 Oz and one of the coins has a white spot on it. Can it be sent out to either NGC or PCGS to be cleaned? What would be the right thing to do. The coins are not graded. Can the white spot be cleaned and would it hurt the value of the coin.

Offline jc888888888

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Re: white spots
« Reply #1 on: July 12, 2014, 07:59:07 PM »
I have 1997 China Panda Silver Colorized 2 pc Set 1 Oz and 1/2 Oz and one of the coins has a white spot on it. Can it be sent out to either NGC or PCGS to be cleaned? What would be the right thing to do. The coins are not graded. Can the white spot be cleaned and would it hurt the value of the coin.

unfortunately white spots are forever and cannot be removed

Offline SANDAC

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Re: white spots
« Reply #2 on: July 12, 2014, 09:21:48 PM »
White spot is frequently referred as WSOD (White Spot of Death) on this forum so if you search with that keyword you can find a number of discussions about it.  I'll highlight a few interesting one:

http://china-mint.info/forum/index.php?topic=7823.0  While the article is in Chinese, it shows a number of pictures of white spot and haze.  The white or brown haze (generally near the rim of a coin) are generally treatable.  White spot with a center and diffused white circle like the second picture (50 yuan Marco Polo) is not treatable by NCS.

http://china-mint.info/forum/index.php?topic=3645.0 discussion of WSOD

http://china-mint.info/forum/index.php?topic=9557.msg56432#msg56432 pictures of before/after NCS, examples of what NCS can and can not treat.

My personal experience: I lived in the arid southwest of US.  I always took before/after pictures of submission and examine my coin collection periodically.  I keep my collection in steel file cabinets with dehumidifier squares.  My observation is that new WSOD does not form in my environment and 90% silver coins (most cultural issues are 90% silver) seldom (I'm tempted to say never) form WSOD in the first place.

Offline Mak007

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Re: white spots
« Reply #3 on: July 12, 2014, 09:44:51 PM »
Thanks JC & Sandac for your help with my issue! I hope one day someone will figure out how to remove these WOSD from the coins. Who ever finds the answer to removing these white spots will make a lot money. Thanks again for your help.