What gun do these sights fit?

[John Allen]

Guys, I bought these at a local show. The sights are very similar to1863springfield sights. one is a little shorter the other has a dovetail on the bottom. One also has striations on the leaf. Any ideas?

187874

[John Allen]

Also both have the attachment screw sticking out instead of flush

[Rebel Dave]

Could be from repro Remington Zouves. They are like Springfield sights only shorter.

Rebel Dave