The second today of a pair of color charts I purchased at Brimfield, done years ago by a young Lennart Johnson, who signed both front and back of this one. I'm a sucker for color theory/color wheel exercises of all sorts, but come across them less and less often these days, so I'm even more inclined to grab them when I do. I love the three-dimensionality of this one, making it feel like a field of colorful flags waving in the breeze (or a mock up for an installation, a la Christo and Jeanne-Claude's golden Gates, but in a rainbow spectrum!) 

12" x 9" and in good vintage condition, with painted color strips well attached.