Short description: A kitten
Notes: Taken from eBay . This on got the Holsten Gate variant of the mark - image of it is lost.
Short description: A dachshund
Notes: Taken from Cofart.be . The stamp mark is clearly visible.
Short description: Two dogs, fox terrier.
Notes: Taken from eBay . This one is quite interesting, it’s attributed to Hermann Fritz Neumann and should be quite old. It also features the stamp mark, but in another form: The letters “J”, “C” and “B” are not overlapping, and are put in the middle of the Holstentor .
Short description: An etching after Albrecht Dürer’s “Preying Hands” by Fritz Neumann. Even if the motif and style doesn’t match, the signature does.
Notes: No blind stamp visible.
This is the stamp mark (blind stamp) used on the prints of Ric and Fritz Neumann. There is now a dedicated page on this trace. It will be updated in the next few days with more examples and traces.
You can also look at the pages tagged with “Blind embossing” .
Description: Another work by our Fritz Neumann, look at the signature and the stamp mark on the third picture.
Notes: Taken from eBay Kleinanzeigen
Short description: A tile with a print called “Am Wind” made by Rosenthal
Notes: Found on lauritz.com . There are many other examples available on the net (Google Image Search ). According to this page , the mark shown had been used by Rosenthal between 1939 and 1956. Another hint from this page is confirming this by the used style of the underline.
Update: Rosenthal answered my inquiry

A signature of Fitz Neumann (1881 - 1919), taken from findartinfo.com . His subjects are mostly Cossacks, he was a painter.