Leonardo Nierman Cosmogonico This framed original oil on masonite by artist Leonardo Nierman was bought at auction in 1976. It measures 17.5" high x 21.5" wide. Cosmogonico represents his most well known style - creating cosmic landscapes. Nierman is considered to be the greatest abstract artist for the past forty years belonging to the Mexican Art School. Born in 1932, the artist continues to create works of swirling, vibrant colors with intense and spontaneous brushstrokes. This piece was appraised in 1976 by the Liros Gallery in Alexandria, VA. The asking price is $12,000.00.