ID: metal Luger P08, only marking is "JAPAN"?

Folks,

I am trying to identify a Luger P08 model. It is metal, with a blocked barrel.
There is no marking, except for a single word "JAPAN" stamped on the right side of the toggle lock, just in front of the round knee.

As far as I know CMC, MGC, Nakata and Marushin released Luger P08 models, but they all have many additional markings stamped in various places.

Any hints?

Sounds like the RMI lugers I have at home.
I will check them and come back...........

Now it makes sense!
RMI doesn't seem to have trademarks on models they were selling outside of Japan. I suppose this P08 was originally an MGC or Marushin one, but made for export and sold under RMI brand.

I am just looking at mine at home now, and it definitely sounds like the RMI.
The only other bit of writing is "SAFE" when it's in the safe position.