Did they taper the whole blade from the spine at the toe end to the tail? I’ve been trying to make one and got off track as I’ve never handled one. The geometry I ended up with is similar to post 1850’s Sheffield’s with a stub tail profile.
I no longer have the razor so I am unable to make any measurements. I believe the spine width is even until it reaches the tang where it tapers down to the tail. The blade however tapers from 11/16 at the toe to 5/8 at the heal.