We made this realization for a prestigious pen for the American brand KRONE.
It was dedicated to a well-known pianist as is evident from the structure of the case ... only defect is that ... it does not sound! We could have put in a nice Swiss Carillon, but that wasn't the case! :-)
To be precise, the pen is dedicated to Duke Ellington. We can supply the pen through our store www.styleofzug.ch, contact us if you are interested.