This is a Rosenthal Studio Linie City Cup mug, part of a collectible series featuring different cities. The specific city depicted is Düsseldorf, Germany.

The Rosenthal Studio Linie City Cup Mug Nr. 20 Düsseldorf is an excellent addition to any kitchen or collector's shelf. This coffee/tea mug features a stunning multicolored All-Over city graphics pattern in an Art Deco style, perfect for adding a touch of elegance to your morning cup of tea or coffee. Made from high-quality ceramic, this round mug is a practical and stylish piece for your home.
In excellent condition never been used.
Height 3.5".
Diameter 3".