Cornet in Bb, case, Nominal pitch: B♭ etc.

https://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~64774~102094/full/150,/0/default.jpghttps://images.is.ed.ac.uk/luna/servlet/iiif/UoEart~2~2~64758~102096/full/150,/0/default.jpg