Abstract Original Drawing or Painting pink, white and yellow, 8" x 10" best 1983, vintage

My father, Arthur Jacobson (1924 - 2010), was a noted artist and professor (Arizona State best University) with a long career and I have his estate of artworks which includes these small oil pastel "sketches" in preparation for larger oil paintings. He handled the medium in a spontaneous and lively way, capturing the clarity and vibrancy of the colors. In his later years, he loved abstract, active shapes and line. This one is an original artwork, untitled (pink, white and yellow, ) and is oil pastel and charcoal on watercolor paper, made in 1983, 8 " h x 10 " w. One of a kind, signed and dated by him.