Sol Lewitt: Not To Be Sold For More Than $100Among LeWitt's great contributions to art was the invention of his own economic model Not to Be Sold For More Than $100 presents a comprehensive overview of conceptualist pioneer Sol LeWitts numbered R Series drawings, which he created from approximately 1971 to 1979. As early as 1967, LeWitt had started making cut, folded and torn works, which he intended would always sell for $100. His wall drawings were already selling for thousands of dollars, so