German made drill manufactured between 1948 and 1950. I paid $ 8 on the flea market. The value was much higher after being restored. I did a complete restoration of the drill with this do-it-yourself project.
It will continue to work for many years. As you can see on the video, the gear is very clean. There was intense corrosion on the outer surface.
I would also like to offer you a few tools for such a restoration project and your workshop.
A nice set of screwdrivers (strongly recommended) https://goo.gl/Fim52G
Mini lathe: https://goo.gl/oaqq37
Abrasive Paper: https://goo.gl/JF3amn
100 various drill bits: https://goo.gl/utzSkN
Mini fileset https://goo.gl/G1fHGg