https://www.reddit.com/r/typewriters/comments/1oouq6o/chrome_typewriters/

• Gorham silver-bodied Corona portables made for the Christmas season of 1931

Gold plated machines: - Royal Quiet De Luxes - Olympia SM3

Most of the rest of the machines out there were aftermarket cleaning and restoration related work.

Marketing:<br /> The Corona was one of a number that were plated in 24 K gold for a Luis Vuitton marketing campaign