I put this instrument up ten years ago. It's still sitting in my cupboard. I don't know what it is and I don't know what to do with it. It's a rosewood-ended Lachenal, serial number 72000-odd. 28 buttons, all on one end, only a flat wooded panel on the other. 12-fold bellows, about 7 3/4" across the flats. Most likely a one-off instrument, I can only surmise what it may have been made for ... perhaps an amputee soldier returning after the Boer (?) War, or perhaps a vaudevillian who could play c