Jerome Thibouville Lamy • 1890s
I suspect that JTL made this design with minor variations for some time. We are lucky to have the great catalog entry, but unfortunately the publication date is unknown.
As with most Bb pockets, it could also be played in A with the addition of an extended shank.
The second valve slide is located on the right side, which is the norm for most conventional cornets and trumpets, but fairly unusual for pocket designs.
Length (shank removed): 8.25”
Bell Diameter: 3.25”