Like new on wheels. Any ideas of value? Only thing missing is the side plate. Will fire single shot.

Pre-WWl Russian MG??? More details. Watercooling jacket..corrugated or smooth?? Bronze feed plate??

I need to find out a little more, but it has the corrugated jacket with hinged cap wide enough to pack snow in, so I've been told. Not sure about the bronze feed plate. Has a shield on the Sokolov (I think it's called) carriage.
Thanks