It's a bicycle or motorcycle saddle, 20th century, probably in the earlier part. Saddles like this are sometimes found on a 'roadster' type bike, more often on real working bikes like a postmen and deliverymen used, more often on motorcycles.
There is a stamp on the side, a series of concentric ellipses with a name in the middle. I can see it in the third photo. That's what I would photograph to get an ID. Doesn't look like any name I can think of (Brooks, Wrights, Middlemores, Leatheries, Phillips...).
Value? To restore a saddle like this, figure $50 powder coat the frame, $100 for new leather, and if it comes out well you might be able to sell that for $100-$150... or maybe not.