I dug out a few of these OEM mirrors in good usable condition. They are not for a concourse car, but most of us have others... ahem... So these have various level of pitting on the chrome backing and a couple fo dents from road debree.
Prices 40-60 USD, each. Discount on volume purchase (2+).
If your mirorr is corroded, has broken glas, etc, these would do. Note that the first one on the left is with W108 number, all the rest is off pagoda ( I believe, sees stamping).
Inquire via PM for details. I will have more stuff as I dig them out. Spring cleaning !