I think it's at least mostly Atlas. The round badge painted over looks like an Atlas badge, there should also be one on the end of the bed I think. Hard to tell from the pic but it looks like someone has fitted a newer top slide onto the Atlas top slide base – the one that on it doesn't belong. Doesn't look like the right tailstock either.
As said above, there's a lot missing. Either it's been robbed of all it's screwcutting gear or it's a plain-turning lathe that someone has fitted a screwcutting apron onto, possibly in the hope of doing a full conversion. as it sits it's a real bitsa, and they were never a great lathe when complete.