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 Replies: 14 / Views: 1,904 |
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Pillar of the Community
United States
603 Posts |
After looking at the post by thingee and die cracks, is this more trapped gasses on a widerscale, or a different type of alloy/planchet problem?  forgot the pic  Edited by cpfull
05/27/2007 7:25 pm
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Moderator
 United States
6563 Posts |
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Moderator
United States
6563 Posts |
I believe he's asking about the gas filled one of Lincoln with the line going straight out from his bow tie.
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Moderator
United States
6563 Posts |
I stand corrected
It looks more like some form of acid corrosion.
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Pillar of the Community
 United States
603 Posts |
new picts from scope   |
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Pillar of the Community
United States
7123 Posts |
I have seen and in fact have many of the 80's Plated Zinc cent that exhibit this characteristic,, it looks like dust or dirt in the plating to me .
in time most of these will corrode and develope craters in the zinc .
I cannot speak with much authority about the cause and posted just what I determined it to be ,, coppercoins may be able to teach us both something when He posts to the question.
Metalman
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Pillar of the Community
United States
1952 Posts |
it is trapped gas's between the two metals. yours has the (we call it the ) Orange peel look it is a lot of gas trapped and looking for a way out. sad part is by the time it gets out the coin will be a hollow shell but the plus is it will be a copper shell lol
Gary
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Valued Member
United States
258 Posts |
I have a bunch of them!! I would like to know what they are to. Some have large bubble's and some have just ton's of small bubble's all over both obv and rev. Is there name for them? I call them Bubble coin's  Moonshine |
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Pillar of the Community
United States
7629 Posts |
Moonshine - read Garylcsr's post. He's correct.
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Pillar of the Community
United States
7123 Posts |
Ok its gas ,,what causes it? ,, I'm still not so sure its not caused from contaminates in the plating ,,unless it is a contaminate on the zinc?
Metalman
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Pillar of the Community
United States
1952 Posts |
Ok its gas ,,what causes it? ,, I'm still not so sure its not caused from contaminates in the plating ,,unless it is a contaminate on the zinc?
you are correct in both guesses it is contaminates. not sure if it is the metal or plating but after the bubbles show up it really don't much matter
Gary too
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Pillar of the Community
United States
7123 Posts |
Quote:
not sure if it is the metal or plating but after the bubbles show up it really don't much matter Thats true for the coin !! eventually it will be full of holes ,, but to answer the question in the future for others who are sure to ask ,, it matters . Metalman |
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Valued Member
United States
258 Posts |
OK, Gas, HMMM. Wonder why so much on the newer coin's and not so much on older coin's?
Very good point Metalman!!!
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Pillar of the Community
United States
7123 Posts |
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Pillar of the Community
United States
1952 Posts |
the older coins before 1982 are solid copper not plated at all so there is no zinc in them to corrode
Gary too
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Replies: 14 / Views: 1,904 |
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Posted 05/27/2007 7:19 pm
