Agree with others: you can buy something newer, better, and cheaper. In fact you have to: riding on a stem with a saw slot it it is pretty precarious. That slot is what we engineer types call a stress concentrator. Imminent, sudden fatigue failure.

The finish on that thing is nice, though. You could look at nice vintage Cinelli 1A stems, with a new bar. Make sure you get the right bar and hole size.

Full disclosure: I have a couple of 1A stems for sale on ebay right now.