Here’s something you really don’t see every day! This contrabass trombone in F probably started life in the 1930’s as a contrabass trombone made by Lidl in Brno, in the Czech Republic. Somehow it found it’s way to Switzerland and it’s owner had some cool plans for it! It now features two independent Hagmann valves wich put it to C and D. Both valves together give you a BBb. The famous Bartok glissando is a piece of cake on this one!
There are 7 usable positions if you want to use the handle, otherwise you can probably use 5 positions. The slide inners are not chrome plated but slide action is really good. As usual on those old horns, the slide brace isn’t fixed. That means the outers are free floating wich actually helps with slide action. That slide is far too long to reach for you spit valve. So it has a siphon wich simply empties spit when you put the slide to the floor.
Slide bore is quite small at around .525 inches. So it takes a small shank mouthpiece, wich you would take with a contrabass cup of course… Two more details about the slide: it’s spring loaded and there’s a German slide lock so you can’t accidentally loose your outer slide on a fast passage. It just blocks around 7th position, if you can get there…
The trombone is unlacquered and starts having a nice patina, you could polish it if you want it to be shiny, but I prefer that look. All work has been done in 2002 at the shop of Mr. Hagmann in Geneva.