John Mason: MONA collection artwork Posted on February 15, 2017February 12, 2019 by Maggie Pierson 1927, Madrid, Nebraska – 2019, Carlsbad, California John Mason Triangular Torque, Blue Green stoneware, glazed 1998 Museum Purchase made possible by Carl and Jane Rohman Accession No: 1999.33 23 × 15 × 15″ (click image for full view)