From Los Angeles Times May 29, 1940, I bring you a nice advertisement for the then new Glog-Pruf. Designed, they claim, for use with brushless cream – although in my experience it works with lather applied by brush too – and with the face-fitting bevel that prevents the dreaded five o’clock shadow.
It is amusing/amazing, in hindsight, to see how low they put the value of the razor, blades and cream. A dollar in 1940 adjusted for inflation equals less than a twenty today.