Frederick Hammersley's "Set Up #9" (1964) presents the artist's signature fusion of geometric precision and subtle wit through oil on CB panel, a support he favored for its smooth, unforgiving surface that demanded absolute control. Measuring 43.2 × 58.4 cm, this compact yet commanding composition belongs to the body of work that cemented Hammersley's reputation as one of the most distinctive voices to emerge from the Los Angeles hard-edge movement. The title itself reflects his characteristic practice of assigning playful, colloquial names to rigorously structured works, hinting at an underlying sense of arrangement and intention beneath the clean formal geometry. As a signed original from a pivotal decade in Hammersley's career, "Set Up #9" represents a moment when the artist was refining the language of interlocking forms and carefully calibrated color relationships that would define his mature output. His compositions during this period resist pure abstraction for its own sake, instead inviting a contemplative reading in which each shape feels placed with deliberate consequence. The relatively intimate scale heightens this sense of intimacy, drawing the viewer into close dialogue with the surface. Works from this era are increasingly sought by collectors with a serious interest in postwar American abstraction, particularly those focused on the California scene, where Hammersley occupied a quiet but central position alongside peers such as John McLaughlin and Karl Benjamin. "Set Up #9" is available through Addison Rowe Gallery and is offered without a frame, allowing the collector the freedom to present it according to their own considered aesthetic.