I lucked into what looked like an odd but well made antique flute (looks like silver plated nickel silver) marked ( VOSS ) on the barrel. The only other identifying marks are a "0" on each of the pieces. It has no country of origin marks that I can see, but some odd features might give away the origin. My guess is that this "0" is the serial #? The location of the "0" on the head joint is right at the edge of the tenon, so it can't be seen when the flute is assembled. The "0" on the body and foot is located under the keywork on the ribs. Now for the less usual features:
The body tenon that fits into the foot is slightly longer than 1.25 inches and therefore must have a large hole in the tenon for the first tone hole of the foot.
It has a threaded fitting that would accommodate a palm rest.
It has an unusual key linkage that appears to allow some variation in the linked keys in the right hand, but the way it is set up now, the function is unclear. See the photo.
The pads and corks are all good, linked keys well adjusted, and keys and springs nice and tight;- plating shows little wear anywhere. It's in fantastic shape for a vintage flute and sounds really rich and focused. The keywork has a really nice feel also;- solid but smooth.
Anyone heard of these? European perhaps?