I just received this mirror from aliexpress https://www.aliexpress.com/item/Vintage-Cafe-Racer-Scrambler-9-5mm-clamp-on-Motorcycle-Rear-View-Mirror-Back-Mirror-M8-Screw/32789990672.html?spm=a2g0s.12269583.0.0.6e0611b9qOACCN, and compared it to an 69-71 OEM mirror. It's pretty darn close overall - the main difference being a 40-45mm longer main stem, and to a lessor degree the overall mirror diameter is just slightly larger and has a black rubber gasket around the perimeter, and the mirror is slightly thicker. The short stem angle as well as the unthreaded portion is the same as the original. For $21.99 shipping included and seemingly good quality, you can't beat the price and closeness of this repro mirror. (Notes: Be sure to click on chrome before adding to the cart because they do offer this in black.
Also, this "may" be the same mirror from https://www.diablocycle.com/Kawasaki-H1-Replica-Mirror-clamp-on.html - small picture below).
Jeff!
), and will update here accordingly.
