I understand that Peugeot was a big concern with different departments and one member of the family start the shotgun businees in saint ettienne in the 1920s. all was under the head of the big firm.
when I see this first thought it was maybe another man with the same name, some kind oof "smith" or rebranded but it seems real. the guns were not cheap and go for some money today in france.

seems most are sxs guns https://www.naturabuy.fr/Fusil-Peugeot-item-2991787.html

https://www.naturabuy.fr/Tres-beau-fusil-peugeot-juxtaposer-cal-16-c1-rare-item-5344023.html

https://www.naturabuy.fr/Fusil-juxtapose-Peugeot-occasion-item-2926313.html

https://grives.net/forums/topic/fusil-peugeot-calibre-16

Holden never made shotguns?