I thought it was interesting that this "Debutante" has a "High Fidelity" inscription on the brass channel escutcheon.
(Scroll down on the page)
http://www.etsy.com/au/listing/15588...a-1950s-swivel
This might have been just a short early run and then the inscription was dropped as all these 17" Predicta's are Hi-Fi! (?)