On my personal bus a 1963 DLX the mirror broke after I asked my passenger to adjust it while on the freeway. Luck for all parties they did not drop it!
Bill recognized the valuable missing part when I pulled up to the shop. He asked me what had happened? After telling him the strange and lucky story. He told me to go to a shelf and pull out the box with mirrors written on it. I found the box, thanks to a black Sharpie. When I opened it not only did I find a mirror arm “SWEET!” but, also a reproduction mirror attached! “BONUS!”
Now, I have a nice replacement till I get my original back from repair at the metal shop. Thanks Bill!