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Pillar of the Community
 United States
2368 Posts |
Crack out was successful! I'll post more updates when I can...  Edit: Wow NGC is getting pretty sloppy alright...   Edited by wheatchaser140
01/06/2015 2:17 pm
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Rest in Peace
United States
10625 Posts |
Looks like it was a clean break (out)  |
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Pillar of the Community
United States
2368 Posts |
Alright, I gave it a five minute acetone dip, and then a one minute acetone rinse. The green spot looks exactly the same, no change whatsoever under 10x magnification. Why didn't that work? I'm a little frustrated...  Edited by wheatchaser140
01/06/2015 3:18 pm
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Pillar of the Community
United States
9796 Posts |
Quote:
I saw a video once showing the process of grading coins and I was amazed at how quickly they look over each coin before giving it a grade. As someone that has been on the grading floor at a couple of Top tier TPGs, I can say most graders use no loupe when grading and spend less than 3-4 seconds on each side of a Morgan dollar or other common coin, unless they are looking for variety diagnostics or the coin is questionable in authenticity. When grading smaller coins like 3 cent silver, dimes, etc. some grader (but less than 50%) use any sort of magnification. I've never seen them wear gloves, other than handling a great known rarity in Proof. The PCGS video on grading is a very accurate showing of the grading room (at least in the early to mid 1990's when I visited several of them, ANACS, ICG, SEGS. I'm also very good friends with several ex-PCGS and NGC graders, so speaking from my own knowledge and from discussions I've had with their experiences in grading rooms. "Buy the Book Before You Buy the Coin" - Aaron R. Feldman - "And read it" - Me 2013! ANA Life Member #3288 in good standing since 1981, ANS, Early American Coppers Member (EAC), Colonial Coin Collectors Club member (C4), Conder Token Collector Club member (CTCC), Civil War Token Society (CWTS) member, Liberty Seated Collectors Club (LSCC) & Numismatic Bibliomania Society member (NBS), USMex, Member in good standing, 2¢ variety collector. See my want page: http://goccf.com/t/140440 |
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Moderator
 United States
23522 Posts |
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Alright, I gave it a five minute acetone dip, and then a one minute acetone rinse. Because that soak might take 5 days, not 5 minutes. |
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Pillar of the Community
United States
2368 Posts |
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Because that soak might take 5 days, not 5 minutes. Thanks Dave!  OK, here's a picture of the trouble spot. Note the hazy circle between the B and the U, with a green speck of PVC in the center of it.  |
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Pillar of the Community
United States
5825 Posts |
Consider the possibility that it isn't PVC.
If that's the case acetone might not affect it.
It could be verdigris spot from the copper that the coin is alloyed with.
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Pillar of the Community
United States
2368 Posts |
OK, I'm starting the second acetone dip right now. I'll try to leave it in as long as I can, as New England weather can be quite volatile this time of year, and I don't want any flammable acetone in the house unattended. Hopefully this one will remove the PVC.
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Moderator
United States
23522 Posts |
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Pillar of the Community
United States
2368 Posts |
Excellent thread, thank you! That's a good reference. Do you still have that coin?
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Pillar of the Community
United States
2368 Posts |
It's been approximately 24 hours with no change. SsuperDdave, you suggested 5 days, and I trust your numismatic expertise! Back in the acetone it is then.  Besides, even if the green spot doesn't go away, I can always sell the coin. I only paid $65 for it, and the Red Book has this date at $95 in MS-64. Although I doubt that I could get even close to $95 for it since a) the Red Book values are usually high b) it wasn't that strong of a 64 anyway c) it's not in the slab anymore d) it has minor PVC issues So hypothetically, if I decide to sell the coin, I'll most likely get the greysheet bid price for this date in $63. Who knows? I might break even maybe! And even if I don't I won't lose too much anyway. I'll think it over... |
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Pillar of the Community
United States
2368 Posts |
Just took the coin out after 5 days in acetone. The spot looks duller, more of a grayish-green than a bluish-green. It may have shrunk a bit too, but it's definitely still there. I don't know, it sure is hard to tell with only a 10X loupe. I need a microscope or something. I'm thinking it over, but I'm leaning towards selling the coin. Besides, I might be going to the Westford coin show on the 25th, so if I sell the coin and pool together some cash I already have, I might be able to afford something even nicer! Like a toned Morgan dollar certified in MS-65...  Thank you all for your help and advice! |
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Moderator
United States
23522 Posts |
Did I ever mention you have to work the spot with a toothpick? My bad.  |
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Pillar of the Community
United States
2368 Posts |
I tried a wet q-tip on it, just the *lighest* dabbing on it. I'll give the toothpick method a shot, even if it slightly terrifies me. |
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Moderator
United States
23522 Posts |
For a silver coin with non-PL surfaces, I'm not worried about a toothpick (use a thorn if you have roses). Work from the side of the spot at a low angle, "pushing" towards the center of the spot rather than "scratching" side to side.
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Replies: 24 / Views: 4,824 |
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First Page
Posted 01/06/2015 2:21 pm
