I found this in the Dayton C. Miller Collection: http://memory.loc.gov/ammem/dcmhtml/dmhome.html
Check out this unique key work, by Benedikt Pentenrieder of Munich @ 1836-54!
The G# and Bb touches are referred to as “Crescent” touches (like Gordon Model). They are opened by very light springs and there are auxiliary touches to hold them closed.
Just thought is was very interesting! 
By the looks of the wear on the holes of this flute, it seems that at least somebody else in history also found this flute to be very interesting.
Thanks for sharing, Jordan.
okay!
ah, kinda bent, innit!
and backwards
okay…the third one beats the first for bent 
Wh—?! MY BRAIN! scrambled!
old news, we actually had a discussion about this flute back in “06”… 
http://chiffboard.mati.ca/viewtopic.php?t=41316&start=15
Gawd thats craaazy.
Thats what happens when a key maker has to much coffee!
so we did
…and then the mind goes
Gee Jon,
Nice Picture!
Good memory Jon, maybe I need more electrolytes so my brian will start sparking again! 
Oh well, I’ll just have to keep looking under all those internet stones!