Russian bassoon. Nominal pitch: C.

https://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~82657~396012/full/,150/0/default.jpghttps://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~82658~396011/full/,150/0/default.jpg