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 Replies: 36 / Views: 13,508 |
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Pillar of the Community
United States
1291 Posts |
I looked back in the archives and found that someone had a product named "Silver Date-Back"
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Rest in Peace
United States
3039 Posts |
Everyone-please be CAREFUL with these chemicals. Ammonium hydroxide is much stronger than household ammonia. 30% hydrogen peroxide will oxidize your skin white and nitric acid will turn your skin yellow.
Also, don't ingest the methyl alcohol-it's not the drinking kind !
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Pillar of the Community
United States
2602 Posts |
Yes, I agree. These chemicals are very potent and should be handled with caution. Ammonium hydroxide is a very awful smelling chemical. Nitric acid can burn the wood on a table so you should lay some newspapers of clothes down if you work with any of these chemicals. And wear rubber gloves.
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Bedrock of the Community
United States
17884 Posts |
Another problem is you need to know what concentrations to use on the chemicals. Also with the Ammonium Hydroxide you may find yourself having to explain to the police why you want one of the precursers for cooking crystal meth. I'm sure they will buy your explanation that you just want to try and restore some worn off dates to some silver coins.  Edited by Conder101
12/30/2008 4:18 pm
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Pillar of the Community
United States
1291 Posts |
I'm just disappointed to find out, after all these years, that I shouldn't be ingesting methyl-alcohol. It goes so well with a cherry and a little ginger ale. I guess I'll switch to paint thinner.  Edited by weerdsteev
12/30/2008 5:16 pm
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Moderator
 United States
189142 Posts |
Quote:
I'm just disappointed to find out, after all these years, that I shouldn't be ingesting methyl-alcohol. Chances are that if this were true you would not be able to see any of your beloved coins!  |
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Pillar of the Community
United States
2602 Posts |
I didn't know ammonium hydroxide is a precursor for crystal meth. I thought Ammonium nitrate was and this is why when I go to get fertilizer for my garden, they take down my name and number (ammonium nitrate= main ingredient of fertilizer). Or can both be used?
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Pillar of the Community
United States
533 Posts |
Quote:
I didn't know ammonium hydroxide is a precursor for crystal meth. I believe that Anhydrous Ammonia (NH3) is what is used to make Meth, and being a Kansas farm kid, I know a few (ex)friends that are currently doing a tour in the big house for making it. (not that this makes me an expert) But I think that the only difference is that ammonium hydroxide is simply NH3 that has been dissolved/diluted in water, making it stable at room temp. Unlike Anhydrous that has to be kept pressurized because it has a boiling point of like -20 degrees C. Edited by MorganNoob
12/30/2008 6:00 pm
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Bedrock of the Community
United States
12437 Posts |
Quote:
I thought Ammonium nitrate was and this is why when I go to get fertilizer for my garden, they take down my name and number NH4NO3 is one of two ingredients in ANFO, of the most common mining explosives. ANFO is also what brought down the Murrah Federal Bldg in OK City and Khobar Towers in Saudi Arabia- that is why they want your pertinent info when you buy fertilizer. http://www.globalsecurity.org/milit...ves-anfo.htmMorgannoob is correct, NH3OH is anhydrous dissolved in water. Anhydrous is used in the drug manufacturing process because anhydrous is much more common and readily available due to farming but anhydrous is much more dangerous to handle  With all of that said, unless you have specific training in the handling of hazardous materials and have sturdy PPE available, then you should not play around with these chemicals. If one wants to learn more about processes to etch silver, then I would suggest perusing forums dealing with metalsmithing and jewelry making- those types of people etch different metals all the time and that has been the source of most of my info as well. Edited by biokemist6
12/30/2008 6:26 pm
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Pillar of the Community
United States
2602 Posts |
I was wondering if anyone has tried the iodine method on dateless silver coins to try to restore them?
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Pillar of the Community
United States
3294 Posts |
If anyone finds something let me know, I have a dateless S mint and would love to find out the year.
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Bedrock of the Community
United States
17884 Posts |
Quote:
I was wondering if anyone has tried the iodine method on dateless silver coins to try to restore them? I would think the problem there would be that as it reacted it would form silver iodide which has the same problem as nitrate products, silver iodide turns black instantly upon exposure to light. That's why it was used for photographic plates back in the early days of photography. |
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Valued Member
United States
436 Posts |
I'm reading old posts (learning, learning, learning...) and this one interested me. Is a dateless silver coin of any type ever worth more than melt? Is it worth playing with these chemicals? Or should they be added to the "bullion pile"?  |
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Bedrock of the Community
United States
12437 Posts |
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Is a dateless silver coin of any type ever worth more than melt? In a few cases, yes, they can absolutely be worth more than melt. The most obvious examples would be one or two year type coins that are identifiable such as the 18th/early 19th century Flowing Hair and Draped Bust designs and even the 1916 SL quarter(a couple minor differences between a 1916 and 1917). However, most coins are virtually obliterated by the time they are dateless, SLQs and Buffalos being the main exceptions due to flaws in the date placement. For most issues, the date is protected from excessive wear in a reasonable manner. |
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Valued Member
United States
436 Posts |
Thanks, I was curious. I know you can buy dateless morgans by the hundreds for bullion value, and wasn't sure about others.
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Posted 12/29/2008 9:24 pm
