It's the same disc that's on the SMLE.
two sources www.ima-usa.com www.ssporters.com
The one from IMA is a bit cheaper, but you are going to have to scrub the markihngs off it.
I have NEVER seen a revolver that had the I.D. disc marked.
So far I haven't found a piece of brass I can use. Haven't looked much with Christmas just past. The grips are held together with the bolt going in the right side grip and entering a threaded bushing in the left grip which seems odd. It looks like the threaded metal insert in the left grip belongs there but that would mean that when I get a disk for the right grip there will be threads to go through on both sides(?) Guess I'll just make something myself. Doesn't seem like a big job but you never know. Thanks
The screw should go left to right, with the threaded hole of the disk acting as the nut holding it all together. There should be a bushing in the left grip, but it shouldn't be threaded. Sounds almost as if someone got an oversized bolt/screw and cut some threads into the bushing on the left grip. If that's the case, you'll need a new screw too.
They may have threaded the left side bushing and used a slightly oversized screw. Hard to tell. Guess I'll hit the gun shows and see what they are supposed to look like. It's amazing that a small problem like this can evolve into a big one. Too cold to spend much time at the range so this and reloading will keep me busy til spring. Thanks for your help.