It's interesting that whoever owned this little safety razor kept the box, too. All the components of the razor fit neatly inside.
The sticker on the box says:
OPA Retail Ceiling Price 49 cents. Do not remove or obliterate.
The federal Office of Price Administration (OPA) regulated prices on non-agricultural products and rationed essential consumer goods during World War II. That appears to mean that this razor was sold to someone on the "home front" during a time of metal shortages and "black market" retail operations.
A description of the O.P.A. is here:
The National World War II Museum's website is here. It has lots of interesting resources for teachers and students: