I too am wandering into this thread late in the game.

I recently acquired a Mdl 42 with a serial 12234. Funny thing is that as per the list at the beginning of this thread, my revolver shouldn't have a 5-screw side panel, at least not with the serial # I have. But it does.
Any ideas?

As well, the grips drive me nuts on this revolver. I can't use a standard speedloader as the top left side of the grip bulges out too much. Any suggestions?

Thanks for reading.