Many thanks to SWLing Post contributor, Dan Robinson, who writes:
This is only the second Squires-Sanders rig that has appeared on the used market in decades, though it’s the amateur receiver.
The SS-IBS, the receiver pictured in a 1970s Communications Handbook in the shack of Richard Wood, the well-known SWL and linguist, is even rarer:
I’ve got a SS1R with the speaker console and they indeed are rare and interesting receivers.
2nd pix, top, background. Is this something from Olson Electronics? Another Golden Oldie. “Gee, Gramps, you mean there actually was something other than Amazon? Really?!”