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<p>[QUOTE=&quot;Hommer, post: 2958162, member: 73266&quot;]Ok, I get that. The problem that I have is that the machine doubling on incuse letters makes the element wider or there is always an impression of the correct size visible and an added impression near it from a second or third vibration strike. Your photos prove this.</p><p><br /></p><p>When the working die is struck with the hub and it moves, pops into correct alignment, vibrates, or whatever, it will shave the raised element on the die down, much in the same way that machine doubling shaves metal off of raised elements on a coin. In the photo&#039;s that I have posted, take a close look at the R and K in Clark. There isn&#039;t a full impression that is made wider by a vibration strike, but there is what apears to be an element with metal shaved from the side and a ghost double beside it and nether are of normal size.</p><p><br /></p><p>If all of this is correct, hub doubling of incuse letters should look like machine doubling of raised elements and machine doubling should look like hub doubling of raised elements.[/QUOTE]</p><p><br /></p>

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