The Beretta SO3EL in the above picture also has Böhler steel barrels,
Antinit in this case. This doesn't mean the barrels came from
Germany, just the steel. It also has a cross bolt like all SOs
but does not have top barrel extensions in the Kersten manner,
like Cman's. Very sturdy looking hinge pin btw.

Cman, do you have a clearer picture of the name of the maker?
I could try posting on some Italian gun forum to ask.

JC(AL)

"...it is always advisable to perceive clearly our ignorance." Charles Darwin