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 Replies: 25 / Views: 2,408 |
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Pillar of the Community
 United States
586 Posts |
No was just curious if it woukd even hit au... And if the slab was worth anything at all
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Pillar of the Community
Canada
6244 Posts |
The slab and NNC mean nothing. My folks here are very generous for AU. dealing and study those quarters for a few decades, I can say this coin do not reach the AU criteria from far. The base of grading it is ANA standards and then modified for their own standards by the major TPG's. This it is an VF to XF. Sorry to disappointed you, but me I like the things clear. |
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Bedrock of the Community
United States
19237 Posts |
The photos are a bit weak--difficult to provide a decent assessment. Give that, I'd say mid XF to AU50. Wonder if the discoloration is due to old exposure to PVC...
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Pillar of the Community
United States
586 Posts |
@silviosi. Not disappointed. Here to ask lots and learn as much as possible. While there are a few not so nice comments occasionally. I'm learning forums and coins in leaps.
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Pillar of the Community
United States
586 Posts |
Like how tag ppl in a comment... L
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Pillar of the Community
Canada
6244 Posts |
Everyone learn here something, somehow. you are right in your comments.
I have a really suggest to you: "Do not buy the slab, instead buy the coin. The dealer (who it is) will say: It is slabbed" you just answer" I buy the coin not the slab, and I do not ask for certification for pre-buying."
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Pillar of the Community
United States
586 Posts |
So if discoloration could be a pvc issue. Acetone bath? Or leave it as is
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Pillar of the Community
Canada
6244 Posts |
For Silver acetone do not do nothing. The best way without frothing it is boiled in Boric acid at an concentration of 40 to 45 %. Then rinse with very hot water and dry. Same it is for Nickel clad and Gold.
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Pillar of the Community
United States
2286 Posts |
Silviosi- As far as PVC is concerned, acetone works wonders.
I've personally had great results plenty of times.
I'm not sure if that's what you were referring to when you said acetone does nothing for silver.
If you were, you sir are very wrong.
Acetone also removes dirt, debris, tape residue just to name a few.
Saying acetone does nothing is ignorant.
You realize when you know how to think, it empowers you far beyond those who know only what to think.
-Neil deGrasse Tyson
Edited by NumismaticsFTW
07/27/2022 8:01 pm
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Pillar of the Community
Canada
6244 Posts |
@ NumismaticsFTW: Boric acid formula H3BO3, many use but 50% it is antiseptic (cleaning) Acetone: Acetaldehyde C2H4O Propionaldehyde C3H6O Butanone C4H8O The most use is the Ketone (Propionaldehyde C3H6O) which you can buy. The formula show that it is Hydro-Carbonate and oxy) All Silver coins AG (Silver have Cu (cooper) in alloy. Those hydro-Carbonate if temporarily work, will made their back-stage work also. Ketone is good for glue, some plastics but not in the case of this coin. Hope you understand some chemistry. And to finish this here is the quote of a health and safety question: Quote:
The Schiff test is a chemical test that is used to determine the presence of aldehydes in a solution. This is accomplished by reacting a small amount of the solution with Schiff's reagent.
Schiff's reagent is the end product of a reaction between a dye and sodium bisulfite. Acetone will not pass the Schiff test because it contains ketone as a functional group. Conclusion: Using ketone you are expose to aldehydes, one of the main lung cancer agent factor.  Edited by silviosi
07/27/2022 9:53 pm
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Pillar of the Community
United States
586 Posts |
Never heard of using boric acid for coins... Is that silver only?
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Pillar of the Community
Canada
6244 Posts |
@Kerry: The Boric Acid is use from thousands of years by all goldsmiths. Is good for gold, silver and nickel. Not for cooper. Me I put the coin in cotton cheese tissue to boil because I do not want to knock the coins during the boiling. This it is one of the first steps of the restoration companies.
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Pillar of the Community
United States
586 Posts |
Okay. So what do you recommend... I found a powder boric acid on Amazon or or os there a liquid version that |
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Pillar of the Community
Canada
6244 Posts |
No, absolute NO. At the pharmacy you find the correct one. You need the medical boric acid. Is use for new born baby, for foots etc. Their you can ask and take the pure one. Amazon and others import from China and you never know wat it is. |
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Pillar of the Community
Canada
6244 Posts |
Tomorrow morning I will put 2 coins in the treatment. One old silver and one yellow JFK from cello. You will have the answer by the photos.
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Replies: 25 / Views: 2,408 |
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Posted 07/27/2022 4:42 pm
