Wheaties

RPM stands for Repunched MintMark! A Repunched Mintmark is the result of a Mint Worker punching the Mintmark into a Die then punching another Mintmark into the Die again. If the second punch is not perfectly on top of the first punch, then you will have a slight to moderately offset extra Mintmark. There are many reasons that this may have happened such as the first punch was weak, the first punch was crooked, the first punch was sideways or other reasons. Sometimes multiple or more punches of the Mintmark were made to a Die with some coins exhibiting a "D" Mintmark over a "D" Mintmark and sometimes a "D" over a "D" over a "D" Mintmark. Repunched Mintmarks are known to exist on many coins Minted at the Denver, San Francisco, Carson City and New Orleans Mints. Another different but somewhat similar Variety is an OMM (Over Mintmark). These occured when a Die or Dies from the Denver Mint with the Mintmark already punched into it was shipped to San Francisco for use in completing a Production run. This Die or these Dies are repunched with an "S" Mintmark over top of the "D" Mintmark, thus creating a Die with a "S" over a "D" Mintmark that is then transferred to any coins minted with this or these Dies. Quite a few different Varieties for RPM's and OMM's can exist for a specific Date and Mint since many Dies may have received additional punches of the same Mintmark or another Mints Mintmark, whether intentionally or unintentionally. Many coins even exhibit "D" over "S" over "S" or "S" over "D" OMM's as well.

Well, I hope that I have not confused you! I am sure that someone could explain it in a much simplier manner!


Frank

That's an awful lot of work putting THAT many coins in 2x2's !!
Congrats on accomplishing that !
I have 2,500 or so Wheaties that are just stored in ziplocks (double bagged).......and I fear that's where they'll stay for quite some time ! ..