You know, I hadn't even realized it didn't say "England" on it. Thank you for that.
Wood wasn't really used for this razor but if you like it it is not wrong exactly, just not period correct.
I would try looking at strazors.com. he has a good write up on many of the manufacturers.
In broad brush strokes it is before 1891 because of the lack of the "England" stamp but probably earlier since Wostenholm stamped theirs with England prior to the Mckinley Tarrif if I recall correctly. I think it was them unless I am getting them mixed up with some other maker. Also it had to be after 1848 because that is when they moved to the Washington Works plant from Rockingham Works which they our grew. As a guess I would say it is 1860s to 1870s but.thatnis just a guess from the look of the blade.
One good source I have found for horn and bone is https://guitarpartsandmore.com.
I have a similar razor with a French point) with what I believe are the original black horn scales.
Hope this helps.
Attachment 331340
Wostenholm moved to Washington works in 1848 so that puts it between 1848 and 1891, roughly a 40-year span.