I can't help you with the age, except to tell you that if the blade is hollow ground, as it appears to be, it was most likely made after 1850 and I think probably before 1890. Have you got it shaving for you yet? It looks like it will be a nice one, when honed.
I agree - and I don't know anything about the company either but that doesn't mean anything. It was obviously a high end razor in the mid 19th century. Definately not a cheap razor back then.
IMHO I dont think this was part of a seven day set.
Most 7 day sets have MONDAY, TUESDAY,..ETC on the spine
I think this was part of a cased pair. So its twin is out there somewhere
happy hunting .