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Tarnished Silver US 25 Cents

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Pillar of the Community
United States
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 Posted 09/01/2018  10:13 am  Show Profile   Bookmark this reply Add SilverDollar2017 to your friends list
Rest in Peace
10197 Posts
 Posted 09/01/2018  10:58 am  Show Profile   Bookmark this reply Add Crazyb0 to your friends list
Black is generally the final stage of coin metal degradation, the natural process of metal oxidation, or in plain English, decay. At least you know it won't be getting any worse!

True, "rainbow" or multi-hued toning ate nothing more than stages of the natural downward cycle. You may be able to retard the progressive effect, for a time by sealing, chemical treatments, but onward metal corrosion marches.
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 Posted 09/01/2018  11:14 am  Show Profile   Bookmark this reply Add Coinfrog to your friends list
I would say that black is usually not a good sign, but how about some pics?



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 Posted 09/01/2018  11:45 am  Show Profile   Bookmark this reply Add Errers and Varietys to your friends list
If you can post a picture, that would be great.
Errers and Varietys.
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 Posted 09/01/2018  4:45 pm  Show Profile   Bookmark this reply Add Kopper Ken to your friends list
Pics would be great...I myself do note find the black toned silver coins attractive. TPGs seem to ignore the black and just grade it on the details.

KK
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 Posted 09/01/2018  6:01 pm  Show Profile   Bookmark this reply Add fistfulladirt to your friends list
Hi, welcome!
When I listen to LED ZEPPELIN...so do my neighbors...
Roll hunting since '77
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 Posted 09/01/2018  7:38 pm  Show Profile   Bookmark this reply Add Conder101 to your friends list
If it is going straight to black to was probably dipped and improperly rinsed before slabbing and the dip traces are now attacking the coin inside the holder. Unfortunately neither of the two major services guarantees will compensate you for a coin that "turns bad" after it was slabed.
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 Posted 09/02/2018  7:37 pm  Show Profile   Bookmark this reply Add just carl to your friends list

If it's in a slab, that is odd that it is turning black. Mlust have had something on it before slabbing.
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 Posted 09/05/2018  03:35 am  Show Profile   Bookmark this reply Add loubaby51 to your friends list
I was leaning more to a breach in the hermetic seal on the slab. Sorry I couldn't locate the 25c tonite but on another hand I have almost a full NGC box of graded 5c that are all toning a golden color not unlike a Sache Dollar. Never heard of this either. The nicks are all proofs and no its not the camera...any ideas
Tarnished-Silver-US-25-Cents
Tarnished-Silver-US-25-Cents
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 Posted 09/05/2018  08:28 am  Show Profile   Bookmark this reply Add Conder101 to your friends list
Were they toned when they were slabbed? The early 60's proof sets were known for nickels that toned gold or blue in the sets. Those toned nickels were very popular and sometime brought good money. Slabbing them would not be too much of a surprise.

And what generation NGC holder are they? The old "no line" fatties were known for the paper label sometimes causing toning of the coins. Although usually such toning was directional with the toning being greatest at the point of the coin closest to the label.
Edited by Conder101
09/05/2018 08:32 am
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 Posted 09/07/2018  01:36 am  Show Profile   Bookmark this reply Add loubaby51 to your friends list
Hi Gary, about those golden 1964 5c,I bought them quite a few years ago already graded. I knew my stuff back then so I would think I would have questioned a purchase of gold nicks. They were all sequentially graded and shy of cracking one I can see everything but the outer rim with my 60x. Everything is the EXACT same color and tint including the mirror field right down to every letter and number. Do I have 20 gold colored, covered, plated or just perfectly even toned 64's? I'm not a big NGC guy so not positive about the fattie. It has a reeded edge and won't go in a blue PCGS box at all but does fit the silver NGC boxes. Also has the 2" long hologram. Man I put all of my coins in the bank for decades and just recently retrieved them to market out. Kinda difficult when you don't know exactly what you have. I tend to go with possible paper discoloration except that they are all evenly toned(?) and no sign of bleeding out onto the slab. Am I a zillionaire or an idiot? You would think if they were gold pre-slabbed that NGC would have noted that on the label.Here's a # if you want to look it up 314489-027.I know my coppers like the back of my hand, likewise my goldies but this one has got me bedazzled. Hopefully someone might see this post and know right off. Until I know, I will not be able sell them to my regulars without being able to answer any and every question. That's my form of personal customer service and client retention. Plus I have to be able to sleep at night. I hope to be able to sell them soon as I am liquidating my entire 3 generation collection to supplement my retirement since Reaganomics practically wiped me out. I don't know how to cross post or even what other category to move it to to get a few more opinions. Any help would be cool.1 more quicky,how do you crack an Ncg or Igc slab without harming the coin. In my day cracking out was not considered kosher, so I have never done it before. I really have a boatload of IGC stuff that looks to me to be undergraded. Plus I can hardly get 9 bucks for a 64 red ms67 1cIGC where the same grade in PCGS is $17,500? Thanks a bunch
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 Posted 09/07/2018  01:45 am  Show Profile   Bookmark this reply Add Fuzzy317 to your friends list
I was trying to lookup the NGC slab, but they also require the grade when selecting

EDIT - nevermind I found it, but it doesn't show a picture
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 Posted 09/07/2018  03:35 am  Show Profile   Bookmark this reply Add loubaby51 to your friends list
so Fuzz what's your take on 20 identical golden 5c graded one after the other? I found a very short forum discussion about this and the conscientious was toning but 20 toned slabs exactly alike? Interesting I posted some pics on page 1. THX
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 Posted 09/07/2018  03:52 am  Show Profile   Bookmark this reply Add Fuzzy317 to your friends list
I believe slabs are not air-tight. Toning in a slab could be caused by fumes that came from the paper insert (out-gassing) or by the air from where the slabs are stored. Coins that are placed in folders sometimes develop differences in toning on each side. In the past, Whitman folders were notorious for having the glue out-gas and cause coins to tone.
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 Posted 09/07/2018  10:19 pm  Show Profile   Bookmark this reply Add loubaby51 to your friends list
I ask a relatively precise to the point question to NGC and received this answer Max Spiegel said:
Mike,


Thanks for the question. While NGC holders are virtually airtight (and watertight), there can be some variance between individual slabs.
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