Re: MC.
The answer is right in front of you, just look at the rib.
M. Cantarini was a Parisian retailer at 11 blvd Bonne Nouvelle.
He was the successor of Charles Roblin.
He seemed to have been in business in the 20's and 30's.
This is a beautiful gun proved in 1926.
It would be very hard to identify the actual maker.
Congratulations to the owner. I would love to own that one.
WC-