To confirm, about the saddle, the tension bolt at the nose, when viewed from the front, is kinda )(-shaped? That is, a cylinder with a round channel machined into the sides? That is unusual.

The current design, with a round headed tension bolt, was in use by the early 1950's. I don't know when the change was made, but yours is earlier, perhaps pre-war.

Saddles of that age, in that condition, are rare. PBBikes would probably ask $499 for it. But of course you can ride it, put it on that Italian bike, the one with the mismatched fenders that you ride in the rain.