RPM or MD ?

CoinZip · February 17, 2015 7:33PM

Is this a Re-Punched Mint Mark or Machine Doulbing?

ricko · February 17, 2015 9:25PM

I would say RPM....Cheers, RickO

cmerlo1 · February 17, 2015 10:08PM

The look of the upper serif on the D indicates machine doubling to me...

rmpsrpms · February 17, 2015 10:49PM

This is a nice example of Machine Damage Doubling. The metal on top horizontal of the D has been "pushed down" by the die moving downward after the strike. Notice the build-up of metal at top of the vertical bar and upper part of the curve. This metal was displaced by die movement.

Edited to add...this must be a test, because usually with this level of MDD there is evidence in other areas. Do you not see any similar damage on other parts of the coin?

CaptHenway · February 17, 2015 10:50PM

MD

CoinZip · February 18, 2015 4:14AM

<< <i>This is a nice example of Machine Damage Doubling. The metal on top horizontal of the D has been "pushed down" by the die moving downward after the strike. Notice the build-up of metal at top of the vertical bar and upper part of the curve. This metal was displaced by die movement.

Edited to add...this must be a test, because usually with this level of MDD there is evidence in other areas. Do you not see any similar damage on other parts of the coin? >>

No test.... there are no surprises, just a potentially helpful thread. I have been shown a lot of these by folks just starting into the RPM or OMM world.

Here is another photo of the same mint mark, a little different angle.

johnny9434 · February 18, 2015 4:33AM

<< <i>I would say RPM....Cheers, RickO >>

thats what it looks like to me as well. jmo

seanq · February 18, 2015 5:24AM

I would also say MDD from the images, do you have one that shows the entire date as well? Typically MDD will be evident there as well.

Sean Reynolds

lostincoins · February 18, 2015 5:30AM

The second provided image gives the look of roundness to the shelf and thus looks to be a RPM. Very interesting with ther different images. could you make them a little smaller and place them next to each other?

lostincoins · February 18, 2015 5:40AM

if you look at this image of your mint mark the upper left corner of the D is showing an indent giving the look of a RPM. The shadows on the original image are a bit dark.

RPM or MD ?

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