A W&W never turns up here, what a find! They are suppose to be very nice running and nice to work on. The only problem is they are few and far between. This is a type of straight stitcher you could set up for regular use.
The treadle looks likea Singer VS2? I'm not sure, there are a few very similar shuttle models and I can't always see the difference with out a bit of research. It looks like it's in very nice condition, it's a nice model too.