The FT-17 had variants for MGs only, a short 37mm gun, and a 75mm howitzer. I suppose it could be the 37mm version, then. There was also a command version without any gun. It looks like there is a gun there, but I am having a hard time deciding if it is a gun or a trick of the light/angle.
Taking a cue from the big Italian tank to the right, I suppose it could be the Italian version of the FT-17 which was the Fiat-3000.
If none of those, I will wait for Blooz to come back.