Brand: Rostocker.
Producer: Rostocker Brauerei GmbH.
Description: Golden crown cap. Dark blue cap semi circle with white text: ROSTOCKER. Dark blue text with golden shadow: PREMIUM. Green label with white text: Bock Hell. In the center, golden logo of a tower with a barrel and two white birds.
Factory sign: DKF (Delmenhorster Kork-Fabrik).