I like to announce that Werner Chr. Schmidt, a mouthpiece manufacturer in Markneukirchen, since 1842, will offer copies of the Ed. Kruspe Prof. Weschke mouthpiece described in Vereecke and Krause (2015), Ed. Kruspe's Prof. Weschke Model Trombone, Historic Brass Society Journal 27, https://www.researchgate.net/publication/272291158_Eduard_Kruspe's_Prof_Weschke_Model_Trombone
thanks to one of the authors of the article. (Big thanks!)
The measurements are
Inner diameter: 25 mm / 0.984 inch
Depth of cup: 26 mm / 1.024 inch
Bore: 5.7 mm / 0.224 inch
(These are the measurements I got from Schmidt. The article has another set of measurements that differ slightly because of the way these measurements are taken. But the measurements are literally from the same mouthpiece.)
There seem to be a trend to switch to romantic German trombones for romantic German repertoire. This may be a mouthpiece to go with it. It may also fit very well to alto trombones. (Weschke himself used the same mouthpiece on his bflat-tenor, eflat-alto, and c-trombone). Often I see people spending money on a traditional Thein or Laetzsch but then keep on using their standard mouthpiece. My 1920th Kruspe Weschke sounds and responds very differently depending on the mouthpiece.
Who would be interested in such a mouthpiece? I try to get a sense of how many pieces Schmidt could expect to make. I didn't get his pricing yet. Orders should be placed with Schmidt directly http://www.schmidt-brass.de/englisch/index.htm
They are very good in communicating in English via email. I ordered quite a number of mouthpieces from them previously. Shipping to the US went very smoothly.
They will also offer copies of four other Ed. Kruspe trombone mouthpieces. Details can be asked from Schmidt (they are not listed on their website yet).