That was a drum wheel, wasn't it?
I hate to be the one to say 'I told you so...' but
Yes, you
can get rid of those marks, but it will take a LOT of sanding, and you'll deform the razor.
The way baby looks, the only feasible way would be to find someone with a belt grinder and 1" or 2" contact wheels, and have them grind away the damage.
It will be tricky, and a lot of work but it is possible.
Then again, it would be more expensive than what the razor is worth.
My advice: use that one as a practise razor to try new techniques on, and forget about restoring it.
I don't mind spending dozens of hours on a special razor, but this one is just not worth it imo. Not anymore.