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Re: Rusted die or pitted/corroded surface on coppers.
From an image, it's tough to tell the difference between rusted dies and pitted coin surfaces. However, in-hand you'll see that rusted dies leave small protrusions on the coin's surfaces whereas corroded coins will show as pits on the surfaces. -
Rusted die or pitted/corroded surface on coppers.
I perused the current thread that had the unsuccessful old copper submissions. I have seen a quite a few of these old coppers with their share of corrosion and environmental damage. It seems like a whole lot of them have their problems. Perhaps that's why we don't see many in TPG slabs. But I digress. What I'm curious… -
Re: Rusted die or pitted/corroded surface on coppers.
rust die the "pitting" come up off the coin, otherwise it is in the coin -
Re: Rusted die or pitted/corroded surface on coppers.
Not sure if you can tell with this pic, but this is what the surface would look like from rusted dies. Notice the raised areas around the birds talons in this pic? -
Re: Rusted die or pitted/corroded surface on coppers.
In the humid salty air of Philadelphia the dies not in use would start rusting fairly quickly unless they were protected. Typically this was done by coating the face of the die in either lard or wax. Todays die steel alloys are more resistant to corrosion. -
Re: Rusted die or pitted/corroded surface on coppers.
I sure can see that. Was it noted somewhere that at some point this half dollar's die had rust (as in Breen or some other literary account) or was it more-or-less a common occurence in certain mints? I would imagine it would occur if a die sat unused for a while and then was remarried with a latter date die. When I say… -
Re: Rusted die or pitted/corroded surface on coppers.
WOW what a great picture, JRocco AL -
Re: Rusted die or pitted/corroded surface on coppers.
That makes perfect sense. All the more reason to purchase these coins in person as that kind of effect probably wouldn't be all that apparent in an image unless it is shot from more than one angle or light source. Thanks for the responses.
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