I'm not sure but the front of the seat looks high like the reiner saddles.
I don't know much about western, it could be an all purpose that can
be ridden in a wide range of western disiplines? Like roping, and reining.
I hope this might be of help but I don't know much at all so it might not

That saddle looks nice though
Christina

PS. I don't really know how much it is worth, you can check
eBay - New & used electronics, cars, apparel, collectibles, sporting goods & more at low prices
or google, and you might be able to get a good idea of what
it's worth