You are right - for a pure collector the razor might be worthless. But same with a razor that has a crack.

The crack was going deep until the right corner of the "R" from the word razor. Indeed I was thinking for a short time to only grind out the crack from the edge line and leave the rest as it is. Than I could have saved the ectching with the wording at least. And a shave would have been generally possile. But - there is the risk that hair is getting stuck during a shave or that the crack is expanding. So too much risk in my opinion for proper shaves. Thats why I always go as deep as necessary to grind out the whole crack in a razor.

Stay sharp Peter