~ Hoch lebe die reitende Artillerie ~
This is a regimental (reservist) stein for a field artillery regiment with horse drawn cannons hence the "riding" as the cannoneers rode too. The owner, Reservist Waras, served in the Field Artillery Regiment #35 garrisoned at Deutsch-Eylau from 1902 to 1905. Note the cannon on the finial matches the unit as also seen on the side scenes.
Hoch lebe die reitende Artillerie Long live the riding (field) artillery.
Translation: Roy De Selms
Photo credit: Unknown