If it's an OLD Baker, "made by L C Smith", pushing the front
trigger forward may unlock it. Other popular methods were
underlever and sidelever--but I don't know enough about old
L C Smiths to know if they are even an option.
I do know that there are far more GENUINE Wells Fargo!!
marked shotguns out there than were ever produced.
Along with London 1851 Colts, Walker Colts and a few others,
the counterfeits way outnumber the real McCoy. Caveat Emptor.