A masterful example of Albers' lifelong exploration of color interaction and perception, *SP III* features precisely rendered geometric forms that demonstrate how colors influence and transform one another when placed in close proximity. Executed as a screenprint in colors on Schöllers Hammer Board, the work reflects Albers' meticulous approach to the optical relationships between hues, a pursuit central to his celebrated *Homage to the Square* series and his landmark theoretical work *Interaction of Color*. The smooth, rigid surface of the board enhances the crisp, flat planes of color, reinforcing the artist's interest in pure visual experience stripped of painterly texture or gesture.