1956-D LWC RPM Completely Stumped

Looks like an rpm to me too.

Dead on match for 1956D-1MM-025. Nice find.

It is not a RPD. It is a RPM. A RPM is a RePunched Mint mark. A RPD is a RePunched Date. Repunched dates are 19th century thing. Did happen in the 20th century. The 1942/1 Dimes and the 1943/2 Nickels happened because the die hubbed with two different year hubs. On the 19th century coins the dates were added to the dies. Hand punched. The 20th century dies were hubbed with a complete hub. SO they are not repunched dates.

Not a problem, but always nice to have the correct information on the thread.

Markers are nice to have a match when attributing a coin. But events that happened before/after a clash that maybe in in different directions. Still does not disqualify the die number. Checking die wear might tell if the die that struck your coin was earlier than the example you are comparing with. Less die wear, earlier die state. More die wear later die state. But something that might help is to check next to devices and inside devices. The die scratches on the fields flatten with time. But the areas next to/inside devices can still show some previous die scratches. So it might be an area to look for previous die scratches. But don't concern you self without the markers. It is just nice to find them if they are there. I like it when images are taken to match the ones on coppercoins. It helps a lot.