LEFT: STRAIGHT AND BROKEN LINES RIGHT: STRAIGHT AND NOT STRAIGHT LINES
signed, titled and dated Nov 7. 1972 on the reverse
ink on paper
36.4 by 27.8 cm. 14 7/8 by 10 3/4 in.
Private Collection, New York
Private Collection, Switzerland (acquired from the above in the 1980s)
Thence by descent to the present owner