Awesome save!
Since it powers up, you are half way there already! Just needs a complete teardown, cleaning, and polishing. Replace bearings and brushes and it may be set to last a few more decades. These vacs look wonderful when cleaned and polished.
The rich brown trim against gleaming polished aluminum, the one-of-kind lighted logo on the headlight, and the sunburst label in the belt lifter...
Ask away if you have any questions on it!
I am currently restoring my mom's original D50. It is torn down to the last screw and first round of polishing has been done. Gotta get it done before Christmas, as this is my gift to her.