The switch marked: Boin Taburet a Paris.

Maison Boin-Taburet was a renowned Parisian silversmith firm active in the late 19th and early 20th centuries. Founded around 1860–1873 by antique dealer Georges Boin and his father-in-law, jeweller Émile Taburet, the firm became known for its high-quality works and its revival of 17th- and 18th-century decorative styles.