? 10.4mm Swiss Ordnance round

Can anyone identify this round for me please? The projectile flares just as it enters the case and is held in by four small punch crimps spaced 90° apart. Thanks.

10.4mm Italian Ordnance Revolver

Thank you - any idea on the manufacturer? I’m guessing 1937 production.

C = Pirotecnico Regio Esercito di Capua (Pyrotechnic Army), Capua, Italy & you are correct the date is 1937
Z.G. are the inspectors initials which stand for Zangari Gaetano

Here is a good webpage: http://www.munizioni.eu/italiane2/13-italiane/204-10-35-ordinanza-italiana.html , use an online translator

Thank you