Installed my 1930's NOS GM script mirror w/clock. Fabricated a custom bracket for it and it works great. You pull a string a few times on the bottom to wind it up. The mirror is the perfect size at 2" x 7" I lurked on eBay a long time to find the right one.

http://good-times.webshots.com/photo/2276907110102454676yUGhGD