The pics below are from a beautiful solid 18k Baume pocket watch I am getting ready to part with. It is obviously an early one before Baume became Baume&Mercier. The case, dust cover and movement are serial number matching. The thing I can't figure out is what the B&L under Baume Geneve on the movement means, who is B&L is? How many of these type early Baumes are there out there in 18k, I can't find any recently and don't want to sell it short. Anyway, any help would be greatly appreciated.