Great to see this here! I'm writing a dissertation on this chap. There's lots to discover... watch this space!
I'm afraid I don't know much about his instruments. The most detailed work on this seems to be Cottrell's article for JAMIS. My work is focussed on his compositions/performances and connections to Scottish culture via. Robert Burns, Walter Scott and the bagpipes. Who'd have thought!Very nice to hear this, there is a lot on line but not quite so much about his instruments .
Where are they, are they on display, are they playable? Does anybody play them?
Agreed. I think it's likely that the only surviving photograph is the one from 1864, which is held at the British National Archives and appears in the Cottrell article. Unfortunately, despite the filling of patents in 1860/61, I think the overall narrative of Soualle/Ali-Ben-Sou-Alle's life and career indicates that the "turcophone" and "turcophonini" (essentially alto and soprano saxophones) were bespoke, unique and not necessarily cherished after the demise of his performing career in the late 1860s.Yes, I think I have quoted from that article, but it is all very condensed. To the saxophone collector there would be the need of pictures and details, I can't believe that the horn has gone destroyed and that there was only one.