I heard voices talk about old time, when you have no knowledge on flute repairing tecniques and find a new flute was almost impossible (no flute makers and no ebay).
This one looks to have received lot of attentions and extra cares:
http://www.ebay.co.uk/itm/390936055153?
Improved Patent, unmarked, but a very loved flute.
I do not know much about 19th century flutes, but do find it kind of funny to see one of an unknown flute maker’s flutes described as being “extremely rare.” But I am sure someone will have an educated guess and maybe it is.
I love the “claw keys”! That is indeed rare!
Definately belonged to a “customizer” look at the homemade extra touch for the c key operated by the thumb.
How strange? and the added touches in the other keys.
That is like soooo Gothic dude! 
Unless it has blue tape and hose clamps I’m not interested.
