NO affiliation. I have no idea how sane or not this price is, but this listing has a lot of interesting photos. It says he has YouTube videos and provides a link.
https://phoenix.craigslist.org/evl/ele/d/sansui-3535-the-first-vintage/6694496147.html
https://phoenix.craigslist.org/evl/ele/d/sansui-3535-the-first-vintage/6694496147.html