Spotting Q - 1951 Proof Lincoln Doubled Die Obverse / DDO

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Author	Replies: 6 / Views: 1,765
themetallurgist Valued Member United States 111 Posts	Posted 09/24/2014 10:42 pm I recently got into collecting Lincoln proofs and thought I got a good deal on a 1951 DDO. When I received the coin, it showed a bunch of spotting as if there was a finger print on it before slabbing. The seller did a great job getting the reflection just right to not highlight the spotting. It was graded PF64RD and bought it for $50. Not much more than a non-spotted non-DDO 1951 proof. Other DDO examples went for $60-90. Is it still worth the price paid? Is spotting the kiss of death? I was also hoping I could get a quick crash course on spotting, how long it takes for it to show up, is it natural after being touched with fingers, or more prone to occur after dipping? how about toning? does a coin quickly tone after being dipping and slabbed? thank you for the help! Edited by themetallurgist 09/24/2014 10:45 pm Report this Post to the Staff

BadThad Bedrock of the Community United States 19942 Posts	Posted 09/25/2014 08:07 am The spotting is likely why the coin only got a 64, there's nothing you can do about it...you can't "dip" copper, especially proofs. Lincoln Cent Lover! VERDI-CARE™ INVENTOR https://verdi.care/ Report this Post to the Staff
themetallurgist Valued Member United States 111 Posts	Posted 09/25/2014 12:58 pm What would happen if you dipped a brilliant proof? Report this Post to the Staff
SsuperDdave Moderator United States 23522 Posts	Posted 09/25/2014 1:21 pm Quote: What would happen if you dipped a brilliant proof? A copper one? You'd get a hideous orangish-colored monstrosity which announced to the world that it had been ruined. Copper and thiourea don't get along well. It's not inconceivable to think that the coin went through grading before the spotting appeared - fingerprints can take a few days to appear as permanent damage (which is what they are; once they're there, you can't remove them). Report this Post to the Staff
52Raymo Pillar of the Community United States 8516 Posts	Posted 09/25/2014 2:21 pm Can you return it ? Oregon coin geek.....* GO BEAVS ! ! ! * Report this Post to the Staff
themetallurgist Valued Member United States 111 Posts	Posted 09/25/2014 3:43 pm Id love to see examples of dipping and artifical toning both good and bad and after 10 years or so to see how copper reacts over time. Anyone know of some good reference material? I can return the coin, but I've noticed that a 1951 proof doesn't go for much less with similar issues, so the DDO is basically a bonus if I can just get over the spotting. Edited by themetallurgist 09/25/2014 3:44 pm Report this Post to the Staff
themetallurgist Valued Member United States 111 Posts	Posted 09/25/2014 11:14 pm would this be an example of dipping a copper proof? http://www.ebay.com/itm/1952-Lincol...047675.l2557 how about the less noticeable... ? http://www.ebay.com/itm/1952-Lincol...047675.l2557 Edited by themetallurgist 09/25/2014 11:15 pm Report this Post to the Staff
	Replies: 6 / Views: 1,765

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Spotting Q - 1951 Proof Lincoln DDO