Question bout Kalamazoo Duplex Serial Numbers

[Starkton]

After an example of the "Diadem" twin-horned gramophone was first shown at the international trade fair in Leipzig in early March 1903, attracting much attention, a company in Halle (Saale), a city in the southern part of the German state Saxony-Anhalt, took over the serial production, see pictured ad of January 1904 from the German trade paper "Phonographische Zeitschrift". Since quite a while I am searching for a surviving example.

[Lucius1958]

The German "Diadem" gramophone, shown to the public at least from early March 1903, was perhaps a source of inspiration for Charles E. Hill's Duplex. Here is an ad from January 1904.

The original inspiration may have come from Armstrong's stillborn "Wonder" gramophone from 1898...

Bill