Yeah, I believe the small skew back to be a household saw. But those aren't screws. I forgot to post the pic of the saw nuts; I attached the pic here. They have a raised S on the bolt side. It does have a very comfortable handle, not one of those slab-sided things. I've never seen this particular saw before, and am wondering who made it.
The Disstonian Institute dates the handle shape to 1918 and prior. Oddly, though, the spacing of the nuts matches the post 1918 handles -- closer together. It's a number 4 12 inch. It hasn't been used much. It does cut pretty well, but I'm certain that a little time with a double extra thin saw file will make it scary sharp. I like scary sharp! A little set and a rub down with bee's wax ought to make it fly.