Only sold for a short period of time, the Plus/4 German version has stickers on some keys, indicating how to type the newly included German alphabet letters in the standard ROM character bank.
In order to keep the production costs low enough, the standard ROMs had been replaced by programmable EEPROMs containing the translated version of 3-plus-1 package, just like Commodore Plus/4 Version Française; same for the Kernel with the new characters.