I know Le Mans is famous for the race, and in quite a different part of Le Hexagone to st. Claude....there does appear to be a ‘Le St Claude’ tobacconist in Le Mans too. Maybe you are right and the pipe was made for this shop as part of the tourist market? Otherwise it displays all of the usual GBD markings and brass rondule (??)Maison de la Pipe sounds like a tobacconist. Maybe this was a second line stamped specifically for this shop?