1994 Penny - Mechanical Doubling on Mint Mark or Re-punched UGG! 1 1

[KevinRK]

Another super rare 1994 Penny  trying to confirm what I'm seeing and what I think I've learned all help is appreciated (crack photos not withstanding)

I of course thought this was a re-punched mint mark at first but after looking closer I thought it was mechanical doubling after pictures I went back to RPM because it doesn't look like mechanical doubling I've seen etc. etc.

Would anyone be so kind as to school the newb again?

Thanks!

 

 

 

[EagleRJO]

You will only find listings for an RPM thru 1989 including sites like Wexler's, Variety Vista or NGC Variety Plus, as starting in 1990 the mint added the mint mark to the master die.  So that coin can't be an RPM and doesn't appear to match any known DDO's for a 1994-D cent.  I would post a picture of the reverse, and look for any other signs of doubling on the coin.

[Sandon]

   I'm pretty sure that what you are seeing is a split in the copper plating around the mint mark, which is seen with some frequency on "D" mint cents of this area. The sharpness of the mint mark caused the plating to split due to the pressure of striking, exposing the underlying zinc. A repunched mintmark would not so expose the underlying zinc on the lighter punching.

   Neither doubleddie.com nor Variety Vista lists any repunched mintmarks for Lincoln cents dated after 1989. As stated in doubleddie.com, "In 1990 and 1991 the Mint began applying the mint mark for circulating coins to the master die.  After 1994 the mint mark was applied directly to the original model for all U.S. coins thus ending the RPM and OMM era." Although it would appear barely possible for a 1994-D RPM to exist, such a variety would likely have been discovered by now.

[Greenstang]

Split plate doubling. Seems fairly common on mint marks.   
No added value, it is one of the worthless types of doubling.

[powermad5000]

My mind went immediately to split plate "doubling" as I noticed it is not really a complete second image of the mintmark and also knowing the mintmarks were applied to the master dies by this date. This is a "weak" version (I shall so call it) as I have seen other examples where the split plating affected not only the mintmark but all of the date numerals as well.

[KevinRK]

Spot on.  I pressed on it with a small screw driver and could see the zinc behind the plating.  Thanks.