Well, part of the problem is that there is no information out there for people to attribute 1952D RPMs themselves. I am working on changing that, but at present there is nothing reliable in print. There are so many different very similar 1952D RPMs out there, it's impossible to use the RPM book to attribute them. So I was asking for any verified attributed examples I could use to create marker identification so I could eventually end up with a set of photos for people to work from.



















