My oldest video recorder is a 1967 Sony CV-2100CE 1/2" CV format reel-reel videotape recorder
http://www.troysvintagevideo.741.com/cv2100.html . I rescued it from a local scrap metal/vintage electronics recycle centre and it is cosmetically in great shape and powers up and functions well mechanically, once tried to record a picture on it but got no picture playback so I guess it's probably not fully functional. I also have a spare video head for it as well.