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1939 Reginam Royal Visit Pm Silver Token Strange Sg Reading.

 
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Canada
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 Posted 01/03/2020  10:12 pm Show Profile   Bookmark this topic Add QwertySilver to your friends list Get a Link to this Message
Hello. Has anyone who has this coin done a specific gravity test on it. I have the 33mm sliver PM version. It weighs 19.27 grams. I'm getting a reading of 10.60 pure silver. All the info I have found says it's sterling which means I should be getting around 10.30 I always get accurate enough readings when I do a SG test. This coin is throwing me off.

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Canada
7947 Posts
 Posted 01/03/2020  10:56 pm  Show Profile   Bookmark this reply Add DBM to your friends list Get a Link to this Reply
Neither a coin nor token, it's a medal.
We need pics in order to help you.
"Dipping" is not considered cleaning...
-from PCGS website
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Canada
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 Posted 01/03/2020  11:16 pm  Show Profile   Bookmark this reply Add Alan to your friends list Get a Link to this Reply
I understood they're close to if not pure
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Australia
16984 Posts
 Posted 01/04/2020  05:35 am  Show Profile   Bookmark this reply Add sel_69l to your friends list Get a Link to this Reply
If sterling silver, S.G. calculates at:
pure silver S.G. 10.5 x 925 = 9712.5
Pure copper S.G. 8.93 x 75 = 669.75
(9712.5 + 669.75) divided by 1000 = 10.38 S.G.

If it is pure silver, S.G. is obviously 10.5, and cannot be higher.

Edited by sel_69l
01/04/2020 05:36 am
New Member
Canada
8 Posts
 Posted 01/04/2020  12:58 pm  Show Profile   Bookmark this reply Add QwertySilver to your friends list Get a Link to this Reply
"We need pics in order to help you."

So you can tell the percentage of silver from a picture?
Ok.

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Canada
3433 Posts
 Posted 01/04/2020  1:11 pm  Show Profile   Bookmark this reply Add oriole to your friends list Get a Link to this Reply
It is impossible to tell the percentage of silver from a picture.

There are machines that some dealers have which can tell if it is 50, 80, 90, 92.5 or pure silver, without scratching the item.
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Canada
7947 Posts
 Posted 01/04/2020  1:44 pm  Show Profile   Bookmark this reply Add DBM to your friends list Get a Link to this Reply

Quote:
So you can tell the percentage of silver from a picture?
No we can't.
But now we know which medal you are asking about.
A few different silver medals were issued to commemorate the occasion.
Yours was issued by the government and is by far the most common 1939 silver medal.
These are supposed to be .925, sterling.
"Dipping" is not considered cleaning...
-from PCGS website
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Canada
8 Posts
 Posted 01/04/2020  1:49 pm  Show Profile   Bookmark this reply Add QwertySilver to your friends list Get a Link to this Reply
Oriole. I was being a bit sarcastic, but it gave me a reason to show off my coin. Yes they have some sort of ultrasonic machine that can tell you the karrot of gold or percentage of silver and many other grades of metals.
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Canada
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 Posted 01/04/2020  1:54 pm  Show Profile   Bookmark this reply Add QwertySilver to your friends list Get a Link to this Reply
DBM. There was enough info in my post to know exactly which coin I was talking about without pictures. The question didn't need pictures to be answered. Obviously you can't tell what metal is in a coin from a picture. That was a joke.
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 Posted 01/04/2020  3:51 pm  Show Profile   Bookmark this reply Add DBM to your friends list Get a Link to this Reply

Quote:
There was enough info in my post to know exactly which coin I was talking about without pictures.

No there wasn't.
If there was I wouldn't have asked, and it's still not a coin.
"Dipping" is not considered cleaning...
-from PCGS website
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Canada
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 Posted 01/06/2020  12:38 pm  Show Profile   Check Pacificoin's eBay Listings Bookmark this reply Add Pacificoin to your friends list Get a Link to this Reply
As stated an official Royal Canadian Mint Medal issued in 925 Silver .
They were sold contained in a small cardboard box for the princely sum of 50
Cents each . A similar sized Bronze one was sold for 10 cents .
The smaller bronze medals were given to school children in
Commemoration of the 1939 Royal Visit .
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Australia
16984 Posts
 Posted 01/06/2020  5:31 pm  Show Profile   Bookmark this reply Add sel_69l to your friends list Get a Link to this Reply
XRF instruments test the surface only of medal or coin.
If the medal or coin is plated the information obtained from an XRF instrument is useless.

That background makes S.G. testing a bit more relevant, but certainly not conclusive in it's own right.
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