I have a 4 valve rotary baryton (German) oval which I happen to love and has a unique sound. Because of it being rare and not generally used in the US, it would be a tough market to sell, if it would sell. My reason for purchase was because I have arthritis in my right hand and it's a bit easier to play than the piston valves and especially the compensator. The front valve horns work well too. So I'm thinking it's going to be a very select market and may take a long time to sell. My horn is what I would call pristine and is more than exceptional quality in finish and manufacturer.
B&S 3046 Baritone/Euphonium
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B&S PT37-S
Schilke ST20 Tenor Trombone
Jupiter XO Double valve bass trombone