Need help identifying this shell case, please

[bayonet Bailey]

Does anyone know what shell case this is and how old this shell case Is? Its diameter is 2.5inches and it length is 15.25inches. Thank you.

 

[Hoeksel]

It is a French made, 1907 dated, 47 mm Schneider-Canet navy case. Pretty hard to find! I am afraid it is cut down though, it should be significantly longer.

 

[Alpini]

Significantly longer?

 

[Hoeksel]

I am actually interested in the original length, I have seen a same case and that was about 530 mm long but no clear dimensions. Significantly longer than the case shown .