Orchestral horn. Nominal pitch: F etc.

https://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~58009~102747/full/150,/0/default.jpghttps://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~29536~102749/full/150,/0/default.jpg