What the? Early attempt at stereo reproduction? 1953.
Modern advert, old receiver.
I'm sure the Marantz aficionados will identify it in a jiffy...
https://imagesvc.timeincapp.com/v3/mm/image?url=http://cdn-img.instyle.com/sites/default/files/styles/684xflex/public/images/2017/01/011217-uma-fit-flop-lead.jpg?itok=k81V-p2J&w=800&q=85
You can have the reciever, I'll take what it's sitting on
I'd prefer what's sitting on it...
The Marantz fans have been strangely quiet...