Quote Originally Posted by Caledonian View Post
It's a wedge razor, and aluminium wasn't produced in bars until the 1850s, or much used commercially until the twentieth century. In the 1880s it cost as much as silver. So I am sure this razor has been rescaled.

It would be extremely clumsy in use as a razor, and one possibility is that it was intended as part of a microtome. This is a device in which a specimen of tissues etc. for microscopic examination is raised very slightly by a screw through a hole in a glass or steel plate, and a thin slice moved by (and on) a very sharp blade.
I just rescaled a microtome blade for someone. It was pretty big, but had an asymmetrical grind. I think that razor is for use by Chinese chefs. For cutting off chunks of pork!