French WW1 57mm shrapnel projectile

[Vasco Da Gama]

Pictured is a French 57mm shrapnel shell that has me somewhat confused. The shell is clearly of French origin and is 240mm long, 57mm in diameter with a 5mm wide driving band. I cannot find any clear reference for this projectile being used in either the 57mm Nordenfelt fortress gun or the standard 57mm/6pdr family. I would be very glad of a steer towards which case this shell should sit in, again any hints on the proper paint scheme would be appreciated. Pictured alongside a standard 6pdr Common Pointed for comparison.

 

[MINENAZ16]

Hello,
I also know these shells in French collections and museums but no reference on the gun and use.
But I'm very sure this shell was used (with this french fuze) by Belgian with gun called 57mm TRN (Tir Rapide Nordenfelt)

Regards