gladly - I reckon you've followed the link as provided in my previous post; what I can say about the instrument is that it's a C/G in the usual octave but only 5" (127mm) across the flats (exactly like a piccolo), it is extremely loud (despite having leather baffles which I thus didn't even consider to remove), but with a nevertheless sweet and pleasant (full and rich) tone.
As per Andrew Norman it's most likely of continental origin, possibly by an (unnamed) maker in Germany, but built in the manner of English makes (dove-tailed reed shoes in individual reed chambers, arranged radially). I had to change the pull reed behind LH button 6 (from C to A) to fit my needs (analogous to my other Anglos, which I had in part also adapted in this way myself).
It's really fun to play it standing up (which I'm hardly able to to with my Englishes, given my 8-fingers style...), as premiered at my eldest son's wedding.
Feel free to ask, you're very welcome.
Best wishes - 🐺