Artist Michael Balog Painting Large Wall Size Modern Abstract Art

Any help with more info/valuation much appreciated

Info on his life and death:
http://articles.latimes.com/1988-01-21/news/ve-37435_1_creative-behavior

"painter killed by an illusion" Description is hand written by Michael Balog
ownership of this painting is corroborated by his close friends.
7 x 5.6 feet

Michael BALOG (1946-1987)
Birth place: San Fran., CA
Addresses: NYC, LA
Profession: Painter, sculptor
Studied: Ventura Col., 1966-1967; Chouinard Art Sch., grad. with hons., 1969, studied with Stephan Von Huene.
Exhibited: Irving Blum Gallery, Los Angeles, 1970 (solo); Leo Castelli Gallery, NYC, 1972 (solo); After-Quake, Denver, Colo., 1971; The Last Plastic Show, Valencia, Calif., 1972; Documenta Five, Kassel, Ger., 1972 (via Herbert Distel Mus.).
Work: Herbert Distel Mus., Bern, Switz.; Univ. IA, Iowa City; Wichita Art Mus., KS; Leo Castelli Gallery, NYC.
Comments: Preferred media: multimedia.