Based on originals by Wilhelm Hess Sr. of Munich (Nicholas Shackleton collection, Cambridge, and Thomas Reil collection, Stuttgart), this is an example of a German clarinet of the 1840-1860 period, suitable for the music of, for example, Schumann and Mendelssohn.
With its ivory socket rings and flat leather pads, and in having its 14 brass keys mounted mostly on wooden rings or knobs, it is a fairly conservative design, though the advanced influence of such makers as Iwan Müller and Adolphe Sax is also seen in features such as ring keys for the right hand.
In accordance with the rising
pitch standards prevailing during this period, the normal pitch level is
A440 (some originals are pitched considerably higher than this).