Well made camera. Thats a heck of a deal and good work on your part. That body looks pretty cherry. No wear marks.
Good coated optics on that lens. Is that a screw mount lens?
Somewhere I’ve still got an old Canon Ftb (not an FtbN) in my storage. 1.4 50mm Canon lens. Last I checked, about 5-7 yrs ago it was still working. I took the battery out before I stored it so I’m not sure about the metering. But the shutter, mirror lock-up, depth of field lever and timer were all O.K. Built like a bank vault. Black body model.
My first SLR was a Canon FX in 1967 for $150 on sale at the local college town camera store. I think my brother and I went together on it.
About ten years later it was joined by a black FTBn; by then I had a few more lenses for them.
A few years later I got seduced by the compact dimensions and the OTF metering of the Olympus OM series, so I sold off the Canons and got a couple of OM2ns. Also traded a VCR for a Mamiya C330 (too bad good scanners for 2-1/4 film are so danged expensive!)
The year all that stuff was stolen, Canon introduced the EOS camera line. I met their EOS engineering leader and he showed us the various internals of the camera and lenses, including the ultrasonic focus motor.
Finally, a decade after that meeting, I got back into SLRs with an EOS Rebel. Eight years later, switched from my EOS film bodies to EOS digital. Still have one lens from that original EOS Rebel purchase, though.
The lens isn't perfect, I had to clean out some fungus, but I think it will do OK.