Nils Kähler: Chamotte Bowl (Large)Chamotte bowl Large. The colour of this piece the deep turquoise blue along with the herringbone pattern was a signature design of Nils Kahler, and one of the most coveted series of his designs. Look inside, you will be mesmerized. Signed "Niles" HAK. 8. 5" Diameter x 5. 5" H Artist: Nils Khler (1906 1979) was 4th generation Kahler and in 1940 together with his brother ran the workshop. Nils was the artistic director and his pieces were all signed