Keith Haring (American, 1958-1990) The Bayer Suite The complete set of six offset lithographs in colours, 1982, on thin wove paper, from the unsigned edition of 70, published by Bayer AG on the occasion of the release of the heart medication Sali-Adalat, the full sheets, framed Each sheet 297 × 237mm (11 3/4 x 9 3/8in)(6)