I'll take the other path and say it is a commercial blade made for a store, wholesaler, exporter, etc. They often had the maker leave his name off, but the country was often required for import into some countries or colonies.
The buyer had the manufacturer leave his name off because the buyer put HIS name on via a paper or foil label, or had it printed or embossed on the sheath.
Military/Gov contracts most often REQUIRE a manufacturer's name so they can return or charge back faulty items.