Looking for info - found this in my reorganizing the stash.

Marked TV Tuner ASSY 0002-0516

ADB's / RCA's and a cable / coax

Think it could be this:  https://68kmla.org/forums/archive/topic.asp.TOPIC_ID=786.html

Wondering if anyone has any info.  Ill open it up and take a pic.

Found this old magazine bit as well - top left