Gruson/Krupp 57 x 184 cases

[Gspragge]

I suspect a mountain gun of some sort. The Gruson catalogue shows a similar but
longer case. These came with a brass three piece plaque soldered in place.
I have cleaned one off. One case has a reload punch the other some kind of mucking about
at the primer pocket. Both are from the same month and lot; March, 1896, P 1 , 4 .

 

[Hoeksel]

Dimensions?

 

[Alpini]

See title ;-) Officially dimensions are 57x185 but they were called "6 cm". It's very difficult to find anything about the gun: Prussian "6 cm Kanone". But it was most likely a fortress gun. The text says they were mounted in retractable armoured turrets. Cases are rare shells rarest.