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<p>[QUOTE=&quot;teachmind, post: 2192764, member: 74952&quot;]Double dies are maybe one of the hardest to spot because there are a lot of different things that make it look as if it were a double die.</p><p>sorry for posting this in your post but I think it would be interesting to you now that you are looking for doubles.</p><p><b><br /></b></p><p><b>here is one I don&#039;t really understand is hubbing</b></p><p><b>Double Die Classification:</b></p><ol> <li><b>Class I</b>: Die being re-hubbed is rotated near the center of the die from the position it was in during the original Hubbing.</li> <li><b> Class II</b>: Design features on the Die/Hub become distorted or miss-shaped during the annealing/tempering process causing the images to no longer align properly when being re-hubbed.</li> <li><b> Class III</b>: Happens when working hubs with different designs features are used to Hub a Die.</li> <li><b> Class IV</b>: Happens when a Die is moved off center in the Hubbing Press from the position it was in during the initial Hubbing.</li> <li><b> Class V</b>: Happens when a Die is pivoted around a point near the rim during the rehubbing process.</li> <li><b> Class VI</b>: Happens when a Hub is overused and the design features become thickened or flattened creating thick design features on the Working Dies.</li> <li><b> Class VII</b>: Happens when a Die being Hubbed is impressed with a normal hub and a then re-hubbed using a hub that has had its features changed or removed</li> <li><b> Class VIII</b>: Happens when the top of a Die being Hubbed is not parallel to that of the Hub. information provided by coinauctionshelp.com </li> </ol><p>a lot of other type of doubling[/QUOTE]</p><p><br /></p>

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