The cap and the handle looks like Gillette OLD type, with the ball end missing, but that guard!!! Hair trimmer?
Is an old razor for shaving off long beard that's why you're seeing a very strange base plate, if they can't find a knife or scissor to trimmed the beard short before shaving.
Yep, a hair trimmer. My wife brought one home from a little ship the other day, too. Put the bottom plate from an old type in it and it might work. Herm