Koenig horn. Nominal pitch: F etc.

https://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~79091~183113/full/150,/0/default.jpghttps://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~77263~183114/full/,150/0/default.jpg