I would like to determine the age of these antique hardware latches and hinges that Ive just cleaned up (used the crock pot method) from a century of paint. The pics can be seen here:

Our house was built in 1863, there are two different patterns to the latches, the one on left is 2-1/8" x 1-1/2" and its 1/8th inch bigger than the one of the right. I have three of the right, and one of the left.

The hinges I love, I love the gun metal finish. I would like refinish the latches to match the hinges. Any ideas? Thanks in advance.