Thread: Manufacturer ID

I don't know about the mark. I have a similar razor with that grind made by David Miller & Son, Eldon Works, Sheffield. Mine has a round point but the same otherwise. I'm guessing 1860's for mine. It does shave very nicely.
I've seen examples from Thomas Turner 'Everlasting', J Blackwell & Son, Saville Street, Sheffield. The Blackwell name was I believe a subsidiary of Michael Hunter & Son, Sheffield. So I'm guessing it was a popular grind at one period in razor history.