This is a super rare and fine flute by the great maker Claire Godfroy & l'ainé in Paris. An 1832 system with a Dorus G#. It is serial# 1005 and dates from c.1849-1850. The pitch seems to be right around A=446.
See also http://originalflutes.com/french-flutes/french-1832-system-fingerin.html
Auf Flügeln des Gesanges by Steckmest
Cantabile by Lindpaintner, Op. 126
