Actually, most if not all. Tech films, c. Pre- 1943 had the silver record. I recall examining a 1939 print of GWTW, as well as a nitrate of The Black Swan - magnificent.
William Wellman's wonderful, 1937 Selznick production, Nothing Sacred, has been problematic for decades - ever since it hit the public domain in 1965.
Original nitrate prints had a very specific monochromatic look, favored by Mr. Selznick at the time, and noting yet seen on home video...