Tenor horn. Nominal pitch: E♭.

https://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~78054~184987/full/,150/0/default.jpghttps://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~76692~184988/full/,150/0/default.jpg