Sometime ago I almost bought a roman era steel razor that I wanted to restore and put in my rotation. I was outbid at 140 euros by a museum director who would probably be revolted by what I was going to do.
I wish you had told him!
But if you want to get historical you can just cleave a flint rock and shave with it, preferably after getting soaked in the rain.
I believe the right place for some (as in rare and historically significant) artifacts is indeed museums.