Cornet. Nominal pitch: B♭ etc.

https://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~76261~186482/full/150,/0/default.jpghttps://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~77969~186481/full/150,/0/default.jpg