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<p>[QUOTE=&quot;Oldhoopster, post: 8502604, member: 84179&quot;]Being a machinist certainly helps, but do you know the specifics of making a coin die?&nbsp; Master hub, master die, working hub, and working die?&nbsp; At what steps the mottos and devices are added?&nbsp; When is the date added?&nbsp; When is the mm added?&nbsp; Difference between 2 step and single push hubbing?&nbsp; The 9 types of hub doubling?&nbsp; The characteristics of hub doubling vs mechanical doubling (split serifs, widening/thinning of the devices, flat shelflike appearance)?</p><p><br /></p><p>If you already know all this info, then you should be able to figure out the answer to your question.&nbsp; If not, those links can be very helpful. Your machinist experience should help you understand this stuff quickly, but don&#039;t assume you completely understand it (from your posts, you can tell you have more to learn).&nbsp; My background is materials science and I can tell you all about high temp insulating ceramics and non-oxides, but if I need to know something specific about organics/plastics, I need to find an expert.</p><p><br /></p><p>I&#039;m not trying to be condescending, just want to help you learn and recognize that whenever you think you know a lot, you usually find out that you don&#039;t.&nbsp; (Happens to me even after 50+ years of ACTIVE collecting and researching)[/QUOTE]</p><p><br /></p>

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