Daryl, the serial number is 2346. On top of barrels, L.C. Smith Maker of Baker Guns Syracuse, N.Y. My guess it is from 1878-79.
Guns that I have seen from before the merge have W H Baker & Co. or WH Baker and after the merge I have seen some that have Baker Pat. and also Baker's Pat.
I have only seen one later gun when L.C. Smith dropped Maker of Baker Gun from the barrel and it had L.C. Smith on the lock plate.

David