Sitting like it is it doesn't have much value, but fully restored it will probably only bring $150, maybe $200 if it looks and runs like new. Power hacksaws of this size are somewhat popular due to the smaller size, and they can even be set up to be bench top models.
I've got a Keller Hy-Duty 5A, which is much larger, but it was in tough shape when I got it. I got it for free, all I had to do was make a 700 mile round trip to go get it, but at least it ran when I got it. It is currently undergoing a rebuild and I will admit that I will have more into it than it is worth when it is done, but that's ok. It's 'Old Iron' and has that therapeutic effect as it does it's thing.