[MrFixr55]

I wonder whether or not radio manufacturers knew about primer. RCA Radiolas built by Westinghouse and GE were notorious for rust. If I remember correctly, I sanded down or used paint thinner to remove paint from a Radiola 16 chassis to repaint. It came off very easily. Granted 37 years difference allows for growth in paint technology, but stripping the paint off my 1964 Lincoln to the bare metal was an entirely different story!