Hard to tell actually. I'm not sure about the scripts on the machine. The black gap in the middle of each letter is kind of strange and it looks like it was printed onto the machine body. I have two original V2s and the stigma labels on them are solid white and if I remember correctly, engraved. The little wheel on the needle tensioner looks different too. I think the bizzares came with a small rubber wheel, whereas the wheel on your machine kind of looks like the newer version, like they had it on the hyper v3 for example.
Soo, don't know 50:50 I guess. Just connect it and let it run. It's probably fake if it sounds like a lawnmower and if twisting the give knob doesn't affect the way the machine runs.