I would say yes, to me it would be worth it. As long as it sews, and the shuttle, at least one bobbin and a needle are included. Those three items may be difficult to find. If you don't have these to start with, it may be really tough to determine which are the correct shuttle, bobbin and needles. I've had that problem with my Pfaff model B hand crank.
This Naumann looks like a beautiful machine.