1973 Large Chromatic Range, Warm and Cool, Color Study Signed Sally Winter unicorn I have a hard time

I have a hard time resisting them

High school shop class was a total nightmare for me--though I wish now I'd paid close attention

3 1/2" x 5 3/8"

ace through king

7 5/8" x 4 3/4" and in very good condition

1973 Large Chromatic Range, Warm and Cool, Color Study Signed Sally Winter unicorn I have a hard timeI've rarely met an old art school color theory exercise I didn't like, but this one is other level, feeling like a finished work that veers into Op Art territory. Dated 1973 on reverse and signed by a Sally Winter, it was executed on a large sheet of gridded paper in what appears to be gouache though perhaps some combination of paint and marker. (Details give a good sense of both color and surface.) Very saturated color, very well done, quite