What's weird is; every TV shop had a whole drawer full of those lucite-buttoned RCA handunits, yet I think the TVs that used this early handunit were rare. I have only seen one or two pre-CTC12 sets with remote. By CTC-16, a whole lot of them were remote. On the other hand, late 50s and early 60s Zeniths showed up with remote more often than not.
I've sold a half dozen of those lucite-buttoned RCA remotes on eBay, and I still have them falling on my feet every time I pick up a box of old remotes
Charles