German 'Eigentum der Stadt Berlin' Porcelain Mug

1930's German 'Eigentum der Stadt Berlin' Porcelain Coffee Mug (Kaffeetasse). The large sized coffee cup has a diameter of 8,5cms and a height of 9,5cms. The large sized mug is nicely maker marked by 'KPM' and 'Korsukewitz' Berlin. Rare original mug in good used condition!