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<p>[QUOTE=&quot;Fallguy, post: 2670363, member: 84739&quot;]I do understand that there is a fair amount of questions regarding the exact dates and coin types where the transitions from hand punched MMs. However, my research also looked at listings for one cent RPMs (CONECA, Wexler and Coppercoins) and I couldn&#039;t find a One Cent RPM example post 1989D (in fact, I couldn&#039;t find an RPM listed for any US coinage post 1989). Two other points, historically the MMs were punched into the Working Hub (which are produced by the Master Die) and while I don&#039;t know how many WH&#039;s can be made from MDs, it is estimated that 200-300 Working Dies (WD) can be made by each WH. The point is that given the number of WHs and WDs, one could see that the chance for re-punches would be greater however circa 1990 MMs were put on the MDs and only 2 or 3 of those can be made by each Master Hub.&nbsp; As such the possibility of a re-punch becomes significantly smaller (if not impossible) because of the number of additional checks would occur by the time the impressing process worked its way down to the Working Dies. The last point is that when dates are used like 1990 or 1991, it needs to be remember that the Mint will often still be striking the prior years coins in the next calendar year depending on the level of demand. As such, a coin with say a date of 1990 may not be struck until late 1990 or even 1991.</p><p><br /></p><p>Of course, this is just my view of the information as I have found it which by no means makes it &quot;true&quot; it is just my opinion based on everything I&#039;ve seen. Some one else may have documents that make it clear as to what specific dates, by type of coinage, these events actually occurred. The other, and more straight forward way of settling this issue is for some one to provide an example of a One Cent piece dated 1990 or later, with a RPM. </p><p><br /></p><p>One last clarification, I believe the statement is, &quot;In 1990 and 1991 the Mint began applying the mint mark for circulating coins <b><u>to the master die</u></b>.&quot; (Emphasis added). &quot;After 1994 the mint mark was applied directly to the original model . . .&quot;</p><p><br /></p><p>Semper Fidelis[/QUOTE]</p><p><br /></p>

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