If you have the serial number correct ( I think you got a few rows off, I looked it up and get a 66 ) then your machine started out as non-electric with a back clamp foot. At some point the motor and light were added, and the presser foot bar has converted to side clamp.
Hard to tell how old your motor is, but for sure it's newer than the machine. From what I can see of the cord, I'd say it's been replaced at some point already. Usually the motors themselves are fine - or they simply don't work. Is that the foot pedal in the background? If so, that looks like one from around the 50's era, and it's not original Singer.