Keramik Keruska was not a stand-alone business, but a very short-lived brand created by Simon Peter Gerz, one of the most famous manufacturers from the region around Höhr-Grenzhausen.
This Multiverse entry was expanded and relocated into the main PM&M archive, please see: Keramik Keruska.

M090645a
Handwritten text "KERAMIK KERUSKA" above "SUMATRA" and "GERMANY".

M090645b
Handwritten text "KERAMIK KERUSKA" above "HANDARBEIT", "TURMALIN" and "GERMANY".

M090645c
Sticker reading "KERAMIK KERUSKA".