Ophicleide, nominal pitch: C

https://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~64499~102086/full/,150/0/default.jpghttps://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~64484~102084/full/,150/0/default.jpg