japanese stamp, help needed

[just]

Hello
can you translate this stamp ?
thanks for answers
cordially
Didier

[BRUNO FRANCK]

hi Didier

i think production year 1940,, and the rest is for the experts

greetings bruno

[Papa Nambu]

As Bruno said. The other marks are the depot and an inspection mark, but really I can't read any of it because it is not clear. However, someone who is more familiar with these stamps may be able to recognize them.

[just]

Hello
thank you Gentlemen
cordially
Didier