Jeff Koons’ Two Ball Total Equilibrium Tank (Spalding Dr. J Silver Series), 1985 was created in advance of his first solo exhibition, Equilibrium, staged at International With Monument Gallery in 1985, in New York City’s East Village. It features two basketball suspended in a seemingly impossible state of perfect equilibrium within a water-filled tank. Works from the Equilibrium series have found their way into some of the most prestigious public and private collections worldwide, including the Tate Modern, London and the Museum of Modern Art, New York.