The screw-tip reminds me of a Lancaster Co horn, I base that on the shape of the tip and the shape of the butt. Probably a second generation horn, the earlier ones have a more bulbus rounded butt I think. Although...there are exceptions.
Another idea may be Dauphin Co., close to Lancaster once again on the lower butt height with the turned ring and the shape of the tip. Look like the staple may have been replaced at one time. Is there any evidence of a staple in the neck area?
Looks like the bottom horn has some sort of furniture pull in it with the ring missing. Kind of hard to put a location on it. Look forward to other thoughts. Nice horns, Thanks for posting.
Tim C.