I can see that this line of thinking could lead to the evolution of the multiple blade DE razor, (Mach3)
not to derail the thread at all, but did anyone notice it said "Combination sets available from $6.50 to $50.00" ... 50 BUCKS in 1907 had to be a huge chunk of change!
I wonder what the difference in the sets would be?
(50 buck set in 1907 solid gold with diamond inlay in the handle???)