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 Replies: 9 / Views: 1,138 |
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Valued Member
United States
441 Posts |
These marks are on the reverse only as shown. Die gouges or plating issue? Thanks in advance.  |
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Rest in Peace
United States
7075 Posts |
Could be brush marks. Can we see the whole coin please?
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Pillar of the Community
7234 Posts |
Obviously lines that are recessed into the die! No idea, can't see a brush cutting lines into a hardened steel die!!
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Rest in Peace
United States
7075 Posts |
After a clash, the die is scrubbed with a wire brush to remove the clash marks and the die is put back into use. That kind of brush can leave lines.
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Moderator
 United States
56855 Posts |
Looks like a quarter. Looks like die gouges. Is a clad coin considered being plated? John1  |
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Pillar of the Community
7234 Posts |
Quote:
the die is scrubbed with a wire brush Oh, a wire brush. Didn't know that. By most of them so called "polishes" it seemed like they used 45 grit sandpaper!!  Edited by Mark1959
07/20/2017 7:37 pm
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Valued Member
 United States
441 Posts |
Yep, it's a 1998D Wash .25. Any interest in seeing the obv/rev in whole? These marks aren't anywhere else that I can see. EDIT: Here's the coin...   Edited by andywoj00
07/20/2017 8:37 pm
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Bedrock of the Community
United States
17884 Posts |
Quote:
After a clash, the die is scrubbed with a wire brush to remove the clash marks and the die is put back into use. It would take a heck of a lot of scrubbing with a wire brush to remove clashmarks. Wire brush is used to remove dirt and clogs from the dies (dig out the compressed grease from Grease Filled Dies.) Clashmarks are removed by abrasives either emery on a stick or in more severe cases a polishing lap charged with diamond dust. The emery stick is what results in the coarse back and forth "polishing lines" sometimes seen. |
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Rest in Peace
United States
7075 Posts |
Thanks for the correction Condor. Just when I think I know something, it's back to school for me.  |
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Bedrock of the Community
United States
17884 Posts |
Just stands to reason, the hardened tool steel of the die is going to be a lot tougher than the bristles of a wire brush. To polish out clashmarks you need something harder than the steel, emery,carborundum, diamond etc.
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Replies: 9 / Views: 1,138 |
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Posted 07/20/2017 6:49 pm
