Rare Antique Pewter 19th-century French pewter oil lamp Genuine For Sale

This is a 19th-century French pewter oil lamp, stamped "LAMPE PERFECTIONNÉE" ("Improved Lamp") and "ÉTAIN FIN GARANTI" ("Guaranteed Fine Pewter") around a central maker's mark.
These heavy pewter hydrostatic or piston-pump lamps were crafted in France during the early-to-mid 1800s, designed to force viscous plant or animal oils upward to the burner.I took pictures so you can see there are some dents and bumps. also, the spring has long since rusted out but could probably be replaced but I'm selling as is. I'm including copies of the Rush light articles, but the last two pictures are just photographs of a book I have, so hopefully you can translate the German