~ Der Kaiser nennt die Herzen sein ~
This is a literal translation of the verse which seems to indicate that the hearts of all the Germans in the land are to the Kaiser like the diamond in his crown. The relief, salt-glazed, stoneware stein features the likeness of Kaiser Wilhelm I and is marked with the Reinhold-Merkelbach logo and "324", ca. late 1800's. It's interesting to note that at the time of the unification of Germany (1871), the German title of König (king) transitioned to Kaiser (emperor) which is derived from the Latin Caesar and a cognate of the Russian Czar, Tzar, Tsar.
Der Kaiser nennt die Herzen sein
im weiten deutschen Land
das ist des Kaisers Kronjuwel,
sein Kaiser Diamant.
The emperor claims the hearts to be
in all the German land
that is of the emperor's crown jewel,
his royal diamond.
Translation: Roy De Selms
Photo credit: Unknown