Metal Boehm system flute. “CLAIR / GODFROY AINÉ / Breveté / PARIS / 1158” inscripted on each joint.
For further information, see sections titled “Refinements and Foreign Patents: The Godfroy Boehm Flute” and “A London Response to Boehm’s Work: Rudall, Rose & Carte” in Jeremy Sexton’s blog post, Boehm’s Ghost: A Vicarious Portrait of a Flute Maker in London.