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Whizzing A Savage Example |
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Before. This unidentified cupro-nickel coin has seen light circulation wear since minting in 2001. (BTW, it looked much better than the nicks and digs and scrapes would suggest.) No idea what country it's from. |
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After. I really went to town on this poor thing. Maximum recommended speed, high pressure, most savage (443) carbon steel brush, and repeated work over a small area. i.e. no attempt was made to minimise damage. In fact, I was trying to move some metal , not just scratch or polish. |
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At left is a graphical representation of a cross-section through the centre of the digits. |
| The red line represents the original surface of the field of
the coin (pre-whizzing). At first glance there is what appears to be raised ridges in the field surrounding the "01". Could this be a result of the elusive moving metal effect? No. The tips of said ridges are below the original field. (I checked with a tiny straight edge.) These ridges are the result of abrasive loss of material, despite my best attempt to "move" the metal. |
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