Unusual 30mm shell for I’d please

[Rrickoshae]

Please see the photos of a 30mm shell, 100mm in length, threaded to accept a nose fuze and a base cavity, unthreaded, extending to the top of the drive band. The crimp cannelures would suggest a double crimp system.

The stampings are; 30 5
CS10 MR


probably of some age looking at the rust pitting beneath more recent paint.

any thoughts please, thanks as always, Dave

 

[fert]

Hello,
looks a french made (MR=Manufacture de Machines du Haut-Rhin) for 30mm HS 830-831

30x170

regards