The stamp below seems to come from a later period.
The pieces I found below all seem to be from the same series, produced in the Art Deco era c 1920s -1930s. Often there are strong identifiers to the Art Deco period - like the ziggurat style steps you can see on the photo of the bowl below.
I have often see this pottery if referred to as "Alienware" by U.S. collectors - probably due to the often bizarre colour combinations, shapes, and uniquely textured glazes that often have an "other worldly" appearance.
From a previous post a brief history which I found on the Collectors Circle site;
Ditmar-Urbach AG, Trnovany, Czechia (Turn-Teplitz, Bohemia, Austria) 1882 the factory was founded by the Urbach brothers and named, Bros Urbach. 1912 it was then taken over by Imperially and Royally Privileged Wilhemsberg-Earthenware Factory in Wilhelmsberg, Austria, owned by Richard Lichtenstern, who also owned Rudolf Ditmar Heirs factory in Znojmo, Czechia (Znaim, Moravia, Austria). At some point, the Urbach and Ditmar factories were combined to create one entity.
1913 the company was bought by Triptis AG in Triptis.
1919 Triptis AG was dissolved and the former owner Richard Lichtenstern bought back the company, Lictenstern maintained ownership, but split the factories to create two companies, Ditmar-Urbach AG and Wilhemlmsberger Earthenware Factory Richard Lichtenstein & Co.
1938 it was confiscated by the Nazis and became Ostmark-Ceramics AG.
1945 the factory was nationalized,
( after 1945 it is hard to find any documented history - hoping to find a book someone has written one day! )
Do you have any Czech pottery? Love to see it on the Facebook page.