For a 1969 show at Eugenia Butler Gallery in Los Angeles, Kienholz brushed a few washes of watercolor over pieces of paper and wrote out on each one what he wanted to trade for the given work. Four examples: a Timex Electric Watch, a fur foat, $313, 10 screwdrivers. Not only is the artwork bartered in this case, its subject is barter itself. 

from  Let’s Trade: 6 Artworks Exchanged for Goods or Services

See more on Kienholz’s watercolors, check out the Ed & Nancy Reddin Kienholz profile page