Karl Gerstner

http://page-spread.com/kalte-kunst-zum-standort-der-heutigen-malerei/
https://thinkingform.nyc/2013/07/02/thinking-karl-gerstner/#/about/
Karl Gerst­ner, Color Spi­ral Icon x65b, 2008. Acry­lic on alu­mi­num, dia­me­ter 41 in. (104 cm). Col­lec­tion of Esther Gre­ther, Basel, Switzerland
https://karlgerstner.ch