You may find some benefit in the information
Here and I think there are some youtube videos about
Rolls Autostrop razors too.
I personally find razors interesting as products because the need, to shave a man's face, has remained largely unchanged for thousands of years. There really are few -- certainly not zero, but few -- other tools where the task has remained unchanged for so long and all evolution is purely in the tool itself.
In any technology, historians of technology look for "inflection points," places where sudden and fundamental change has occurred, something which "changed everything." For example, the development of the internal combustion engine changed everything in ground transportation; the precursors of the internal combustion engine, horses, steam engines, push carts, are all now all but relegated to nostalgia status (we still use push carts for small tasks, but we switch to engines very quickly).
In shaving, I don't really see any inflection points. Despite thousands of years of "progress," the basic principle remains the same, a blade "shaves" the hair off whether that blade is moved by hand or by a motor, in a linear or in a circular motion. We've made differential improvements in the blade and in how it's moved, but the fundamental principle remains the same; there has been no "this changes everything" inflection point.
One -- not the only, but one -- characteristic of a true inflection point is that it splits technology in half; it creates a clear and fundamental divide. A true inflection points split time in half; there is a clear "before" and "after" time.
Really, I see only three significant changes over thousands of years of shaving technology and I class neither as a true inflection point.
The first is the change to electric motors to move the blade. Today, razors divide into two broad categories: those which move the blade by hand and those which move the blade by electric motor. The development of the electric shaver split technology in half; it created a clear divide. But it didn't split time because both forks have now coexisted for over 80 years, five generations, and neither shows any signs of going away soon.
The second major division I see is between disposable blades and those intended to be sharpened and reused many times.
The final major division I see is between the "open razor" (embodied most often by the "straight" razor), and the "safety razor" in which some structure controls the exposure of the blade.
The Rolls Autostrop razors are interesting because they straddle two of these divisions.
