Oh the TT is a BSR no doubt. It's one of their most universally common late 60's to mid 70's changers. It appears on a vast selection of all-in-ones and consoles of the time by various mfgrs. It's quite robust actually and if its old grease didn't freeze solid or fossilize, it can function reliably through the decades. It's still clunky and noisy as hell and the control levers would make it skip with each slide. I think it's using the BSR ST-16 flip stylus (Osmium/Sapphire) and the TA has some minimum of 5g VTF. If that's the case I wouldn't let my Floyds spin on that one. Some later versions may accommodate a standard 1/2" mount cart. Not sure this one does.
Obviously, it's a Thunderbird.
John