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 Replies: 26 / Views: 8,097 |
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Valued Member
United States
148 Posts |
Saved this one as my JWBooth penny. Bad, I know, sorry.  |
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Rest in Peace
United States
7075 Posts |
I think those are too big for Rockwell hardness test marks. BB gun at 3 paces? 2 paces?  |
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Valued Member
136 Posts |
Maybe a bb gun, the dents look about the size of a bb.
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Bedrock of the Community
United States
11951 Posts |
I would agree with possible BB gun incident. I would have to wonder what type of person would do that to poor Abe  |
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Pillar of the Community
United States
3331 Posts |
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Pillar of the Community
United States
2775 Posts |
The width and depth seem proportionate to a BB strike. Any impact bulge showing on the reverse? Thanks, Doug.
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Pillar of the Community
United States
3331 Posts |
It could very well be a BB. I would expect an "anvil effect" on the reverse, which is a bit of a raised area opposite the indentations. Near the end of the paper (online version) I recently wrote about Rockwell Test Marks, I included a diagram of a BB indentation compared to a Rockwell Indentation here: http://conecaonline.org/content/Roc...essTest.htmlA Rockwell mark would be smaller and smoother and not have a pressure ridge as can be seen (faintly) around the edge of a portion of these indentations. |
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Valued Member
 United States
148 Posts |
I will do my best to get a photo of the reverse. I do recall that there was no anvil effect or bulge on the back.
Great article Pete2226! thanks for sharing.
Renee
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Rest in Peace
United States
17900 Posts |
Interesting reason for that type of damage. I enjoyed the article very much, too.
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Bedrock of the Community
United States
62064 Posts |
Probably the reverse is dimpled outwards on those areas?
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New Member
United Kingdom
18 Posts |
Interesting thread, learnt a lot with the article posted. One thing however is bugging me, why were the tested coins not discarded after the test, as a second?
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Pillar of the Community
United States
3331 Posts |
Quote:
why were the tested coins not discarded after the test, In my research on Rockwell Testing, it appears that the tested coins were supposed to be discarded. However, it is thought that a very few made it into production. |
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Pillar of the Community
United States
7390 Posts |
Haha pete. When I read the title I was like... oh boy, here we go again lol
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Pillar of the Community
United States
3331 Posts |
Quote:
Haha pete. When I read the title I was like... oh boy, here we go again lol  |
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Valued Member
United States
54 Posts |
Could be a couple kisses from a drill press too  |
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Valued Member
United States
82 Posts |
Edited by clbchiro
05/05/2016 11:59 am
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Replies: 26 / Views: 8,097 |
Posted 02/14/2016 3:18 pm
