Search:

Yes. May be, you're right. It's not Birks. For me, the razor doesn't look like that was made in early 1800s.
Ok. There was one more maker with the similar mark.
C.P. Gerry. But I know nothing about...

Ok. Can we see the picture of all blade/razor?
To know, about what time period we're talking.

So, it's not G. Johnson's mark. I couldn't find a dart near the pipe. :)
And it's not a Wostenholm razor, it's not his pipe.
And now. I'll try to tell my idea.
I believe the razor was made by...