Doesn't seem to match anything on varietyvista http://varietyvista.com/02a LC RPMs Vol 1/RPMs 1953D.htm Looks more like a cast of MD to me. Hard to tell without seeing the rest of the coin. Also, FYI, you don't need to make another thread. You could just edit the other post and put the new pictures in. Also, Welcome to CT
The placement of the MM matches RPM-001, I can't confirm the rpm with your photos, but it looks like a stage E with some heavy circulation, and damage. When attributing variety's, it is always good to post full size and cropped photos of the coin in question. This helps us find the correct die markers to match it up. Happy hunting and welcome to CT.