How do I identify German porcelain marks?

Large Dümler & Breiden West German Ceramic Bowl / Cachepot with Sgraffito Décor, 1950s A very beautiful and sculptural large ceramic bowl or cachepot by Dümler & Breiden, ha...

The set of 3 vintage Jasba Keramik vases from the 'Aztec' and 'Mexiko' or 'Maya Tiki' lines of their Exotica series features relief decor, influenced by ancient Pre-Columbian civilizations. The sculptural vases in the set interpret traditional vessel forms like a pitcher in a contemporary vein while referencing Pre-Columbian art with an eclectic twist. The vases are decorated with tone-on-tone ochre brown matte glazes on the outer surfaces and semi-matte black glazes on inner surfaces, allowing the complex reliefs to dominate the composition. The vases feature a central wide band of brutalist, rhythmically spaced mythic animals, derived from archaeology or from a wide range of Folk Art sources. The handles are interpreted not as functional parts of the design, but as an important aesthetic feature that was commonly used by West German pottery designers and artists in context of Krug Vase (Jug Vase, or Handled Vase) for their expressive possibilities. In this set, the small handles on two Aztec vases...

Ultra Modern Mid-Century Large Ceramic Jug Vase by Ceramano, c. 1960s, West Germany A striking and rare large ceramic handled jug vase by cult German ceramics workshop Ceramano, han...

Vintage Large Fat Lava Floor Vase with Cobalt Blue Drip-Glaze 88-40 W-Germany' Large Bay W Germany Classic fat lava Cobalt Blue drip-glaze Floor vase Glazed pottery. Stamped on the...

Incredibly beautiful flower arrangement on a ceramic tile with a gloss of glaze in the brightly colors blue, pink and brown. Three separately baked tiles mounted on a wooden frame. This tall ceramic tile plaque...

Set of 2 vintage West German pottery vases features molded Amsterdam decor, often referred to as Onion, and semi-matte textured Fat Lava glaze in red and orange palette. Amsterdam, p...