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My First Cob: Philip Iv 8R

 
 
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Pillar of the Community

United States
964 Posts
 Posted 06/09/2019  10:01 pm Show Profile   Bookmark this topic Add Albert to your friends list Get a Link to this Message
I enjoy collecting deceptive coinage and this is the first cob in the collection. Specific Gravity is 8.3 compared to about 10.3 if it was genuine. Parts of the obverse appear to be "peeling off". The edge and reverse have "holes & pits". Weight is way off at 17.7 grams and compares favorably to a bronze alloy.



Edited by Albert
06/09/2019 10:04 pm
Bedrock of the Community
Australia
15781 Posts
 Posted 06/10/2019  02:19 am  Show Profile   Bookmark this reply Add sel_69l to your friends list Get a Link to this Reply
Pure copper 8.93 g/c, pure silver 10.5 g/cc.
It looks to be 'coppery'.

Rub it with your fingers. Skin oils are slightly acidic and have sulphur as well. OK to do this, if it is a known fake.
The oils will react with the metal, and will give a distinctive 'copper' smell.
Not a greatly useful test, because high silver alloy (~80%) can smell similar.
Edited by sel_69l
06/10/2019 05:46 am
Pillar of the Community
Learn More...
United States
9991 Posts
 Posted 06/10/2019  02:20 am  Show Profile   Check spruett001's eBay Listings Bookmark this reply Add spruett001 to your friends list Get a Link to this Reply

Quote:
I enjoy collecting deceptive coinage


By that, do you mean counterfeit or fake coinage?
Tantum religio potuit suadere malorum.
-Lucretius

"Just because you're paranoid don't mean they're not after you."
-Kurdt Kobain

My Want List: http://goccf.com/t/282022
Pillar of the Community
United States
1947 Posts
 Posted 06/10/2019  06:46 am  Show Profile   Bookmark this reply Add thq to your friends list Get a Link to this Reply
I like the giant castle. Outstanding piece of folk art.
"Two minutes ago I would have sold my chances for a tired dime." Fred Astaire
Edited by thq
06/10/2019 06:49 am
Pillar of the Community
United States
964 Posts
 Posted 07/10/2019  6:34 pm  Show Profile   Bookmark this reply Add Albert to your friends list Get a Link to this Reply
Yes I do mean to include counterfeit and fake coinage as "deceptive".
I have collected and documented many.
Many Chinese that have never been represented here.
A superb field of study, discovery, seek and included in the hobby.
"Clandestine Coinage" can be a part of the study.
"Claimed Fakes" that proved to be genuine are a part.
"Claimed Genuine" coins that I bought and later proved to be fakes are also a part of the study.
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