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dleonard-3

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Posts posted by dleonard-3

  1. I would like to weigh in on this coin cleaning thing.  My opinion is a beginner or inexperienced collector should never "clean" any coin.  Cleaning will alter the original surfaces, and usually is done to make the coin appear as a higher grade, or with better eye appeal, to deceive someone out of their money.  That is wrong.  There is a type of cleaning that I do on occasion as a type of maintenance on the coin.  When I get an old, original copper coin, like a large cent, that has that greasy, crud built up in the protected areas of the coin from centuries of handling, I will usually try to clean it off in a gentle, non-altering way.  I consider this to be "conservation" of a coin, which reveals the true color and preserves it from corrosion and possible damage in the future.  I use a clean acetone soaking, and careful tooth picking to loosen any crud in the crevices and to gently wash it away.  The acetone removes oils from the surfaces and evaporates quickly leaving the coin looking dry and vulnerable.  I will then apply a drop of mineral oil to my fore finger and thumb, rub them together to form a thin film, then dab the coin surface on both sides until the coin is thoroughly coated in a thin coat of oil.  Then I use a soft camel hair brush to even things out.  I don't scrub, I just lightly use the very ends of the bristles to gently lighten and even up the oil on the surfaces.  I then will store these coins in a soft cotton sleeve in a paper envelope.  Occasionally, when viewing my coins, I will run into a coin that has begun to gunk up again, and I will give it a light oiling and brushing again to restore the protection, and the look.  I also realize that after I do this to my coins, they will forever be considered to be "CLEANED" by third party graders as well as most collectors.  That doesn't change my opinion of value, and if you can't agree with the value I assign to my coins, well, you won't be able to buy them from me.  

  2. I have a 2019-S 1C 10-Coin silver Proof Set PF70RDU that shows a score of 143.  It doesn't score the 2048 points shown on the lower chart.  Is this a mistake that needs fixed?

    NGC Registry Score2019 S 1C PF RDU

      PRAG G VG F VF 40 45 50 53 55 58 60 61 62 63 64 65 66 67 68 69 70
    Base 3 3 3 3 3 3 3 3 3 3 3 6 6 6 12 16 20 24 37 41 59 143
    pc_star.gif 3 3 3 3 3 3 3 3 3 3 4 6 6 8 13 17 21 28 38 47 87 150
    pc_plus.gif 0 0 0 0 0 0 3 3 3 3 4 6 6 8 13 17 21 28 38 47 0 0
    pc_plus.gifpc_star.gif 0 0 0 0 0 0 3 3 3 3 5 6 6 10 15 19 23 33 40 53 0 0

    2019 S 1C 10-Coin Silver Proof Set PF RDU

      PRAG G VG F VF 40 45 50 53 55 58 60 61 62 63 64 65 66 67 68 69 70
    Base 3 3 3 3 3 3 3 3 3 3 3 6 6 6 6 37 50 81 123 163 620 2048
    pc_star.gif 3 3 3 3 3 3 3 3 3 3 4 6 6 6 16 41 60 95 136 315 1096 2150
    pc_plus.gif 0 0 0 0 0 0 3 3 3 3 4 6 6 6 16 41 60 95 136 315 0 0
    pc_plus.gifpc_star.gif 0 0 0 0 0 0 3 3 3 3 5 6 6 6 27 46 71 109 150 468 0 0

     

  3. Also, the 1911 proof 63 RED has a lower score (437) than any of the red/brown or brown coins in the same grade or lower.  It should score more than the 1404 points on the 63 R/B.  Maybe just add a "1" for 1437.

     

  4. I was researching a 1909 VDB proof cent when I noticed that the brown coins in pf64, pf65 & pf66 have higher scores than the red/brown coins in the same grade.  This doesn't sound right, so could you please check into this and make adjustments?  Thanks.

  5. I don't know if you know this, but when a proof die was made, it would be sand blasted to a frosty finish, then , because the fields are the high points on a die, the fields are polished to a mirror shine.  The first few coins stamped with new dies will show this "cameo" contrast, but then the normal metal flow during the stamping will burnish the frosted surfaces of the die leaving the entire coin looking shiney and mirror-like.  Sometimes the mint would re-polish the dies if they got worn to remove these "flow lines" that show in the fields mostly, but usually the devices were left mirror like.  Then, in 1975 (I think) the mint started doing die maintenance where if the contrast started dropping off, they would remove the dies, re-sand blast them, then re-polish the fields, so most proof coins after 1974 were deep cameos and the lighter cameo coins were not as common and undesirable by collectors.  The haze that develops on these proofs is quite common, but is a type of environmental damage.  It can be removed with careful conservation, but I wouldn't do it yourself.  Any tiny little mark, spot, or damage of any kind will keep it from being graded at the top level, so if your coins have anything visible, I wouldn't bother sending them in.