Thanks, Martin, very interesting. So if the marks don't match those on the document, it could be that the razors are before 1834 when it was decided to use only those two marks moving forward. Still a possibility they are counterfeit, as we know that was happening at the same time.

The top one has a mark that matches the document so I'm sure that one is authentic and probably post 1834 based on your info. The next two I am fairly confident are authentic as well, maybe pre-1834?

I'm really unsure about the framebacks, maybe the one with the name on the spine and ivory scales is legitimate? Perhaps it depends on if they were making this style frameback pre-1834. The last one stands out as a real possibility of a fake as it is the only one without the name at all, but again, now I'm so so sure.

Just having fun learning more about them, it's really fascinating to me! Thanks for the responses and info so far.