Sanding out the nicks would be a major step, and it's really a one-way door. That is, you won't be able to add steel back, except by replacing the whole blade. Unless the nicks affect perfomance — or they start to annoy you like a loose tooth — I'd leave them alone and figure that they'll be gone sooner or later through sharpening.
I have a new-to-me 1989 112 with a small chip on the edge. I can live with the chip, and in the fullness of time, it'll be gone. But this is very much an individual matter.