I have a razor marked thusly on the tang, and has a gold inlay as follows:

UNRIVALLED
Mail Pouch
FULLY WARRANTED

It shaves really nicely; far better than my modern Dovo does.
About as good as my vintage Henckels 81 Emperor.

Has anyone heard of these, and if so, what's the scoop?

Also, anyone have a clue about the date on the Levering or the Henckles?