38(or39) mm shell

Brass case, looking like a 37 x 94 R Hotchkiss (bottlenecked case)
No headstamp

But after close examination the dimensions are different :
neck diameter about 39.5 mm
inside diameter about 38.3 mm
length 99.60 mm
base diameter 41.80 mm
rim diameter 47.90 mm
rim thickness 2.00 mm

Any idea ??

jp

JP,

This case is French, for the 40mm Hotchkiss Flank Defense Gun.

                                 Jim

[quote=“Jim O’Brien”]JP,

This case is French, for the 40mm Hotchkiss Flank Defense Gun.

                                 Jim[/quote]

thanks !

jp