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<p>[QUOTE=&quot;desertgem, post: 8355866, member: 15199&quot;]True doubling causes an increased thickness of the area, so the overall width is Normal thickness + the additional doubled portion. Other types of doubling effects ( that are not &quot;true&quot; doubling effects )will show show separation into thinner areas that together will be approximately the original thickness. The 55/55 is an easy one to see. Notice that each section that overlaps tend to blend together at same height rather than total separation and the 2 together is much thicker than original. But it is for classical doubling with double squeeze production and a &#039;69 would be in that era. I do not see such doubling in your example. Jim</p><p><br /></p><p>[ATTACH=full]1482972[/ATTACH][/QUOTE]</p><p><br /></p>

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