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<p>[QUOTE=&quot;Fallguy, post: 2918967, member: 84739&quot;]For the comparison measurements I used Serif DrawPlus X8; for more precise 3D models I use SketchUp Pro 2017 . . . However, the DrawPlus program does have an interesting auto-trace utility, but you need to have a HD photo with good contrast and even lighting so as to not capture unwanted features in the trace.&nbsp; What I really find useful though for making overlays with &quot;markers&quot; is my new Corel PaintShop Pro 2018 (64-bit) program. I can bring in the photos in question; change their color to B&amp;W (to reduce light glare hot spots); jack up the contrast; throw on a transparency layer; zoom to the point of pixilation, and; begin adding some fairly precise markers in just minutes. I don&#039;t even have to add a layer to the 2nd photo as I use the native file format of the program, and it auto-saves the original. All I have to do is to remember where it is I&#039;m putting the markers at on the second coin<img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" /><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" /><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />. It does produce a large file and is processor (both CPU and GPU) intensive, but I have a pretty power-packed unit. Besides, it will convert the file to a reasonable sized JPG with little loss of definition.</p><p><br /></p><p>As a clarification (though you may be absolutely right for the 1909 Lincoln as a different process may have been used), the &quot;Sole&quot; parent for the coins I&#039;m familiar with is the &quot;Master Hub&quot;. This Master Hub is used to produce two or more &quot;Master Dies&quot;; as such, during that hubbing process, error(s) could be introduced onto one Master Die and not the other(s) resulting in two distinctly different looking end coins (regardless of other errors that may be introduced during the hubbing with those die [or &quot;dice&quot;] of the Working Hubs, and then those being used to hub the Working die [ditto]); assuming of course that all of the &quot;Master Die&quot; are used.</p><p><br /></p><p>Last but not least by any means, that is some terrific work above!!!</p><p><br /></p><p>Semper Fidelis[/QUOTE]</p><p><br /></p>

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