They were similar...but a few modifications...
The newer 80s GE M-250R1 had the reflector modified a bit to be able to get them screwed on to the housing while the old 60s GE M-250R had a easy to remove reflector which was held by some metallic strip on the front outside of the reflector.
To add a note....the LM and McGraw Unistyle and the McGraw Unidor also had the same reflector as the 60s GE M-250R but they were mounted differently.....
