MP Motorcycle Helmet- US?

[Red Devil]

Greetings!

 

I apologize in advance if this doesn't turn out to have a US connection--it is clearly a foreign-made (seems like a French or Belgian design, no markings in it at all) motorcycle helmet. I picked it up locally and it sports "MP" painted on the silver surface.

 

I believe early '50s-60s MPs abroad sourced many different types of motorcycle helmets, but I was wondering if anyone has seen such a helmet in use by US MPs? Or can you ID this to a foreign military?

 

Thank you for any insight or direction!