Ya it's old used damaged but that's not my question :)
Apologising for your stamp, is superfluous.
You have what appears to be an Anchor Perfin from a business in Japan.
I have personally, no records of Japanese Perfins.
However is seems a "Type 5"
was used by the SASEBO Naval Port H.Q., the Dockyard, and the Hospital there too.https://www.angelfire.com/pr/perfin...cals/10.html