Ok, I have a number of unrestored R1's that I'm about to tackle and return to service. Being a stickler for period detail, I've noticed that I have two types of guard (see pics). One of these has three concentric rings, the other four. I know that the first R1's had a very different guard to the ones shown here, but which of these variants in my pics is the earliest, and does anyone know a reasonably accurate date range for either type? Being cheeky, could someone who's really in the know please give me a brief tutorial on dating the R1? I've had a look on here and the best I can find seems to be either pre 1950 or post 1950 - based mainly on whether it has a copper reflector or not. If it helps, I've got one with a copper reflector, another with a wooden handle, a few with a metal folded handle and an R1A from Dec 1961 (from stamp on base) Lots of questions... I'll stop now! Cheers brethren!
Hello Jim, check out the link below as that may help with the dating, Jeff. http://www.classicpressurelamps.com/forum/showgallery.php?fid/37/
