This is a three-piece design with a bakelite handle. The baseplate's shape is a ringer for a pre-WWII Gillette Tech. The packaging suggests that the razor was manufactured by the Federal Razor Blade Co, in New York.
Though the head is heavily covered with a whitish substance (old soap?) and the baseplate is also partially coated, I suspect both have a black finish underneath. The substrate from which they are made is unknown to me.
I am not tempted to ask if I can clean it up and shave with it, because if it is a pre-war Tech copy, then the shave would be just a bit too aggressive for me. Still it was a fun surprise to find this shaving artifact in my buddy's private museum.