~ Help in identifying the author

[Тихая Сапа]

Bravo , Sim !


I think it's the originals . Dry stamp of the firm are often seen on original watercolors and drawings . Usually it was a high-quality textured watercolor paper frontier of XIX- XX centuries . Confident that the company contain its own network of stores art materials .

Added after 5 minutes
Yeah, they were engaged and involved in the production of paper

Added after 33 minutes
Carl Schleicher und Schüll, Düren.

Founded: 1862.

First stamp (s) traced by compiler: 1893 for Municipal Post of Chefoo, China.


In 1862, Carl Viktor Schleicher and Ludolph Schüll registered the company Carl Schleicher & Schüll in the town of Düren.


In 1873 they participated at the Vienna World Fair with their range of stationery, legal forms, books, and drawing paper as well as manila boxes.
In the 1920s (at least), they printed banknotes.


In 1998 they purchased the securities printing business ODS, formerly R.
Oldenburg, Munich.
The company still existed in the year 2000.