Formally and chronologically nestled between his Colorhythm series and later works such as Papeles Coloreados, the present lot represents an artistic period when Alejandro Otero began to experiment with assemblages: adding tools such as wrenches, saws, gloves, and chains to his compositions. These experimentations call to mind formal concerns as varied as Constructivism, Informalism, Dada, and Pop. In the present lot, Otero’s signature concern with spatial relations is still evident even if formally Untitled, 1966, is distinctively different from his geometric and constructivist compositions. Following the saw from tip to handle, it becomes apparent that much like he used color and lines in previous works, Otero here is employing a sculptural gradient: the end of the blade blends onto the surface, while the handle literally breaks out of the edges of the frame to jut directly into space.