Still, might be a fabulous addition to museum and collector folks out there

Interesting. I wonder if it's either "lost in the system" and was sold years ago, or just genuinely nobody wants it? I think the right museum ought to preserve it as a part of trombone history. It's also got a handle, so you can actually do the Bartók gliss properly with it (unless you really feel the need to do it on a double-slide howitzer). I'm trying to get to the bottom of Kunitz's patent - is the novel part the fact that it uses metal levers/linkages instead of string (I've heard somewhere the Dehmel used leather thumb loops on strings? That could be wrong...), or is it that he put the second valve on a finger lever (instead of two thumb levers)? My German is not good enough.
I highly doubt that's a 7 position slide- most contras are short of 6, a 7 position in F is very very long.jonathanharker wrote: ↑Thu Aug 25, 2022 10:50 pm It's also got a handle, so you can actually do the Bartók gliss properly with it (unless you really feel the need to do it on a double-slide howitzer).
Hence the lever. I played an Alexander F/C with one valve at a show many years ago and the slide was 7 positions but you needed the lever to reach the outer ones.Burgerbob wrote: ↑Fri Aug 26, 2022 12:02 amI highly doubt that's a 7 position slide- most contras are short of 6, a 7 position in F is very very long.jonathanharker wrote: ↑Thu Aug 25, 2022 10:50 pm It's also got a handle, so you can actually do the Bartók gliss properly with it (unless you really feel the need to do it on a double-slide howitzer).
My contra had a handle, and doesn't even have 6 positions.BGuttman wrote: ↑Fri Aug 26, 2022 3:10 amHence the lever. I played an Alexander F/C with one valve at a show many years ago and the slide was 7 positions but you needed the lever to reach the outer ones.
Similarly, G basses have levers to allow you to reach 7 positions.
The short slide is a relatively modern take on F trombones.