A Pioneer of Expressionist Portraiture: Max Oppenheimer Max Oppenheimer, known affectionately as “Mopp,” stands as a pivotal figure in Austrian avant-garde art, particularly celebrated for his emotionally charged portraits that captured the spirit of his era. Born in Vienna in 1885, Oppenheimer’s artistic journey began amidst the burgeoning Expressionist movement, fueled by an unwavering fascination with capturing inner turmoil and ps…