The original mouthpiece is preserved with the original three-part straight cornett made by C. F. Paulus from Neukirchen in 18th or 19th century. The mouthpiece was originally made of ivory. It is very familiar to common types of mouthpieces used nowadays. The main difference lies in the sharp transition from cup to throat. Backbore starts with a short cylindrical passage and transitions to the backbore. The rim of the mouthpiece feels a little on the thicker side. The timbre is similar to modern mouthpieces with a touch of mid-range partials and subtle contour of the high spectrum provided by the sharp transition to the stem. It has a very slight tendency to hiss.
The mouthpiece of three-part straight cornett from a private collection in Basel
C. F. Paulus, Neukirchen (18th or 19th century)
Paulus
Below you can see a spectral view on tone d2 played on my reproduction of SAM 230 in a=465hz with the Paulus mouthpiece. The partials are linearly decreasing in volume which contributes to a softer and more balanced timbre, close to the modern aesthetic of the cornett sound.
The mouthpiece is available in original design based on a drawing by Graham Nicholson or with the possibility of custom requirements for different rim widths, stem diameter, and taper. Available materials are buffalo horn and synthetic ivory – elforyn®.
If you are interested in the mouthpiece or getting more information, I will be happy to answer,