What brand is this?

Looks like some sort of parts bass. For 50 bucks I wouldn't worry what the brand is if there ever was one.

 

For $50, the neck is worth more than the bass. Yup, probably a parts bass but there's no reason it would play well and sound good. I'd prollly get it.

 

I don't think that's even part of a logo - more likely just the remnant of a sticker, perhaps like a traffic sign, that someone put on there to obscure or replace the original (if any). It could be any of a hundred generic makes. But at that kind of price, who cares?

 

Nickel tuners instead of chrome = pretty old.