China Silberne Erinnerungsmedaille ???

[Kriegsmarine Großadmiral]

Did anyone ever hear about this medal: China Silberne Erinnerungsmedaille (China Silver Commemorative Medal) (not to be confused with the China-Denkmünze (China Medal) in Stahl (Steel).
I found info that 3 later Admirals (Edmund Schulz, Emil Heusinger von Waldegg and Alfred Saalwächter) that were on board the SMS Hertha in 1904 recieved this medal. And many other officers/sailors that were onboard the Hertha.
The only medal I managed to find is the Inoffizielle Erinnerungsmedaille "Zum Andenken an meine Dienstzeit in China" but this one was in Bronze. Was there perhaps a version in Silver?