What Is This On A Seated Half Reverse?

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Author	Replies: 5 / Views: 1,118
cownas22 Pillar of the Community United States 1055 Posts	Posted 06/11/2009 1:48 pm I am wanting to find out what the splotching to the right of the eagle on this seated half reverse is caused by. Any ideas? Report this Post to the Staff

SeatedNut Pillar of the Community United States 2797 Posts	Posted 06/11/2009 2:57 pm Looks like carbon spotting ... localized toning on and surrounding surface contaminants. Look at the spots via 10x from a 45 degree angle. Is the surface raised at the spotting? If it is and the coin is not in a reputable slab, I'd try the acetone treatment followed by a thorough rinse. Report this Post to the Staff
cownas22 Pillar of the Community United States 1055 Posts	Posted 06/11/2009 3:01 pm The coin is graded as problem free by PCGS as XF-40. Do you think the spotting will get worse or stay about the same seeing as it is slabbed? Report this Post to the Staff
SsuperDdave Moderator United States 23522 Posts	Posted 06/11/2009 3:06 pm Quote: Do you think the spotting will get worse or stay about the same seeing as it is slabbed? The slab is not airtight; it won't interfere either way with the process. However, it's unlikely that the spotting will get any worse, except possibly on a really long timescale, measured in decades. Report this Post to the Staff
cownas22 Pillar of the Community United States 1055 Posts	Posted 06/11/2009 3:23 pm Do you think using something like a intercept shield slab box would help at all in keeping the spotting from spreading? or would it be just the same as putting it in a regular PCGs/NGC slab box? Report this Post to the Staff
Conder101 Bedrock of the Community United States 17884 Posts	Posted 06/12/2009 11:40 am Quote: The slab is not airtight; it won't interfere either way with the process. They aren't airtight but they do greatly slow down the changing of the air, so while they will not stop the process of toning they will interfere by slowing it down a great deal. Report this Post to the Staff
	Replies: 5 / Views: 1,118

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