53mm Hotchkiss revolver gun case

[Vasco Da Gama]

The case pictured turned up recently and I think that it is from the Hotchkiss 53mm revolver cannon, although as it is without markings I am going by the measurements alone. The rim is 66mm, length 186mm and mouth 53mm, with some damage. Initially I thought the primer was false but it appears to be correct and has an internal part inside the case. Pictured alongside a 53x177mm Gruson case for comparison. Glad to have confirmation of my identification and any thoughts on a date. Many thanks to Tony Williams, identification based upon data in his ammunition data files.

 

[Alpini]

Could it be that there is some thin brass foil wrapped around the base of the case?

 

[Vasco Da Gama]

Thanks Alpini, I have checked the case again and cannot find any evidence that the base is covered by a foil coating. It has a very thick rim and is solid from my perspective. It is possible that a foil has been placed over the primer and extends to the visible circle about a third of the way across the base. However, I really cannot detect a ridge or join at that point. The other option is that this is an unfinished case but having the primer pocket on the inside is surprising. Anybody willing to post a picture of another one?

 

[Alpini]

ok, I wasn't really sure what I see on your photos. The shiny sharp edge on the base mislead me