My '50 3100 came with a rectangular mirror on the driver side, mounted to what appears to be the original arm.
The mirror was cracked, and I replaced it with a 4" round mirror I scored in a box with a bunch of other junk from the auction for a buck.
I dont have a mirror on the passenger side. The rearview mirror.. don't know if it's stock, but it looks like it is.. it's kind of narrow, and hard to really get a full view out the back window, so i'll probably replace it with something a little wider.
