Help identifying this antique secretary?

[raetza]

Hello and thanks for adding me to your forum as a new member! My wife and I are in the process of acquiring some furniture for a new house. One piece we recently bought at an auction has me intrigued ... I'd like to know more about it but I've had difficulty identifying it. It appears to me to be a "side-by-side" Secretary Desk. I believe it to be Mahogany with hand inlays. I'd like to know as much about it as I can, but so far haven't been able to come up with much.

I'm also missing 3 of the 4 lock mechanisms, which are half-mortised into the cabinet doors...so I'm on the search for replacements. So far, unfortunately, all obvious sources of restoration hardware have not had these locks with the keyhole in the correct location (dead center on the two main doors with lock being 3"L x 1 7/8"W x 9/16"T).

I'm attaching pictures if anyone can help I'd be most appreciative!