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Gilbert Portanier is a French artist, painter and ceramist.
He studied architecture at the Ecole des Beaux-Arts in Paris, then opened his own studio in Vallauris. Portanier is known for the variety of forms of his ceramic works, which range from the most classical and structured to the most baroque. He is often called the "wizard of colors.


Friedrich Gräsel was a German sculptor, painter and graphic artist. He was known for his kinetic sculptures, which often incorporated light, sound, and movement.
Gräsel studied at the Academy of Fine Arts Nuremberg and later taught at the Academy of Fine Arts Munich. He began creating kinetic sculptures in the 1960s, using a wide range of materials such as metal, wood, and plastic to create dynamic, interactive works of art.
Gräsel's sculptures often feature intricate mechanisms and complex systems of movement, inviting viewers to engage with the work on a sensory level. His work frequently incorporates elements of humor and whimsy, while also exploring deeper themes related to technology, nature, and the human condition.
Gräsel exhibited his work extensively throughout Europe, including at the Venice Biennale, Documenta in Kassel, and the Museum of Modern Art in Paris. He was also awarded numerous honors and awards for his work, including the Bavarian Order of Merit in 1987 and the Art Prize of the City of Nuremberg in 1997.
