Oktavin. Nominal pitch: B?.

Technical description: Fine workmanship. Rosewood with german silver mounts and keywork. Folded air-column in manner of bassoon, with descending and ascending portions bored parallel in single block. Out-turned metal bell, silver-plated. Tone-holes are not long tunnels as in the bassoon, but relatively short passages as in the clarinet. Wooden mouthpiece with silver-plated ligature and cap. L0: 8a…