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1971-D Kennedy Half Dollar Question...

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New Member
United States
19 Posts
 Posted 08/22/2017  10:37 am  Show Profile   Bookmark this reply Add Cass1260 to your friends list
Not sure if I did this right. I placed it next to a nickel..
1971-D-Kennedy-Half-Dollar-Question...
Edited by Cass1260
08/22/2017 11:33 am
New Member
United States
19 Posts
 Posted 08/22/2017  10:41 am  Show Profile   Bookmark this reply Add Cass1260 to your friends list
You're right. I shouldn't have put chlorine on it but I really didn't know any better. Most of the tarnish came off.
Not putting anything else on it!
New Member
United States
19 Posts
 Posted 08/22/2017  12:04 pm  Show Profile   Bookmark this reply Add Cass1260 to your friends list
Any thoughts after the tissue test, John1?
Bedrock of the Community
United States
17884 Posts
 Posted 08/22/2017  12:40 pm  Show Profile   Bookmark this reply Add Conder101 to your friends list
The tissue test results look interesting. Enough so that a specific gravity test should be run. That would be definitive. If it IS a 40% silver half, your chlorine test and subsequent cleaning off of the tarnish has already reduced it's value by probably 50%.
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United States
19 Posts
 Posted 08/22/2017  12:51 pm  Show Profile   Bookmark this reply Add Cass1260 to your friends list
Really? Hindsight is 20/20. What is a gravity test?
New Member
United States
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 Posted 08/22/2017  1:08 pm  Show Profile   Bookmark this reply Add Cass1260 to your friends list
Never mind. I googled it. I'm just going to have to take it to someone to look at. I can't find anyone in my area-the closest coin shop is two hours away. I'll let you all know what they say.
Pillar of the Community
United States
4469 Posts
 Posted 08/22/2017  9:21 pm  Show Profile   Bookmark this reply Add Slider23 to your friends list
This thread is really disturbing that chemicals are being put on a possible collectable coin. There is a XRF gun that is used to determin silver content that does no harm to the coin in any way. Often at coin show someone will have a XRF for use on possible counterfiet coins. The X Ray Flouresent - (XRF) can provide measurements of gold and silver and these tests take only seconds and leave no marks.
Valued Member
United States
372 Posts
 Posted 08/22/2017  9:47 pm  Show Profile   Bookmark this reply Add goldnugget to your friends list
She said she put Chlorine on it and it Tarnished Immediately, don't think it will help the Grade unless she might be able to remove the Tarnish with some Acetone
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 Posted 08/22/2017  9:48 pm  Show Profile   Bookmark this reply Add macmercury to your friends list
Live and learn.

Youtube can be good and bad reference, either way hoping that you do have a gem.
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 Posted 08/22/2017  11:38 pm  Show Profile   Check spru's eBay Listings Bookmark this reply Add spru to your friends list
A jeweler may have ways to test for silver as well, especially one who buys silver and gold.

Just make sure the coin is handled correctly and non-destructive tests only!

It seems a little daunting but, as I mentioned earlier, a specific gravity test should really be done. If you missed my previous post with links:


Quote:
I agree that a Specific Gravity Test should be performed. Here are a couple links regarding the process:

http://goccf.com/t/39666

Read swamperbob's post here:

http://goccf.com/t/24689#201659


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 Posted 08/23/2017  01:05 am  Show Profile   Bookmark this reply Add MontCollector to your friends list

Quote:
A jeweler may have ways to test for silver as well, especially one who buys silver and gold.


Good idea...I was also wondering if any colleges/universities would have the right equipment as well. Sometimes they are willing to help out.
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 Posted 08/23/2017  04:39 am  Show Profile   Bookmark this reply Add John1 to your friends list
What about a nearby high school?
John1
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United States
1101 Posts
 Posted 08/23/2017  07:51 am  Show Profile   Bookmark this reply Add shotgung to your friends list
IMO, I'd just send it in for grading and be done with it. Will be expensive if you just send 1 coin in by itself though.
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 Posted 08/23/2017  10:27 am  Show Profile   Bookmark this reply Add John1 to your friends list
If you send it in use ANACS, it is the least expensive.
John1
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 Posted 08/23/2017  2:18 pm  Show Profile   Bookmark this reply Add Conder101 to your friends list

Quote:
unless she might be able to remove the Tarnish with some Acetone

Acetone wouldn't do anything and anyway they already said they rubbed the tarnish off.
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