Das Glas des Jugendstils. Katalog der Sammlung Hentrich im Kunstmuseum Düsseldorf ( Materialien zur Kunst des 19. Jahrhunderts, Band 8)

The items bear minimal signs of past use, such as light scratches or memories in the form of markings. These signs of wear give the items a charming character and tell stories of their previous owners, while not affecting their functionality.