Created in 1968, PU68B by Franco Costalonga presents two chromed hemispheres embedded within a large circular plexiglass disc measuring 83 centimeters in diameter. The work belongs to a pivotal moment in Italian art when artists were actively interrogating the boundaries between fine art, design, and optical perception. The convex mirrored surfaces sit slightly off-center within the pale, translucent field of the disc, their placement suggesting eyes or lenses, simultaneously looking outward at the viewer and drawing the surrounding environment inward through reflection. The colored refractions visible within each hemisphere, vivid streaks of magenta, yellow, and green, are not painted or applied but rather are captured light from the surrounding space, meaning the work changes subtly depending on where it is installed and under what conditions it is viewed. Costalonga was deeply engaged with the Arte Programmata and kinetic art movements that flourished in Italy during the 1960s, a milieu that included figures such as Bruno Munari and Enzo Mari and was closely associated with Olivetti's patronage of experimental design and visual research. PU68B reflects this intellectual atmosphere in its interest in seriality, industrial materials, and the phenomenology of perception. The plexiglass ground, a material strongly associated with the period's utopian faith in new synthetic substances, gives the work an ethereal quality, hovering between opacity and translucency depending on the angle and quality of light. The disc functions less as a traditional art object than as an instrument, a device for registering and transforming optical experience. For collectors, PU68B represents a rare and well-preserved example of Italian experimental art from one of the most intellectually fertile decades of the twentieth century. Works from this period that retain their material integrity, particularly those involving reflective and plastic elements susceptible to aging and discoloration, are increasingly difficult to find in strong condition. The piece functions equally well as a wall-mounted artwork or as an object of design history, bridging the categories that Costalonga and his contemporaries were so deliberately collapsing. Its scale is commanding without being monumental, making it suitable for a range of institutional and private contexts, and its conceptual rigor places it in direct conversation with international contemporaries working in kinetic and perceptual art across Europe and beyond.