"T1964-r13" is a work by Hans Hartung, the German French abstract painter known for his gestural, calligraphic approach to abstraction. Created in 1964, the work exemplifies Hartung's characteristic style of dynamic linear marks and energetic brushstrokes that convey movement and spontaneity across the canvas. The painting reflects Hartung's post war exploration of how gestural marks themselves could communicate emotional and visual intensity without representational subject matter.