This luminous tempera on canvas presents an all-over field of fine blue grid lines rendered against a slightly lighter cerulean ground, the geometry alive with subtle irregularities that betray the hand of the artist at every intersection. Nigro has introduced gentle wave-like distortions across the surface, causing the otherwise rigid lattice to breathe and undulate as though the plane itself were subject to some quiet internal pressure. The result is a composition that defies easy categorization between the rational and the intuitive, between system and sensation. At a modest 64.5 by 53.5 centimeters, the work rewards close looking, the density of its marks drawing the viewer into a near-meditative relationship with repetition and variation. Mario Nigro was among the most rigorous and philosophically ambitious figures to emerge from the Italian postwar scene, and his cycle Spazio totale, begun in the early 1950s, represents a defining contribution to European concrete and perceptual abstraction. Where many of his contemporaries pursued geometric order as an end in itself, Nigro was consistently interested in what happens when systematic structures are subjected to forces of time, movement, and human error. The wavering lines visible in this work are not failures of execution but deliberate interventions, introducing a quality of lived experience into what might otherwise resolve as pure optical mechanism. His thinking aligned in many respects with the concerns of artists associated with the Movimento Arte Concreta, though Nigro always maintained a singular independence from any programmatic affiliation. For a collector, this work represents an exceptional opportunity to acquire a historically significant example from one of Nigro's most celebrated cycles in a format that is both intimate and compositionally complete. Tempera on canvas was a medium Nigro handled with uncommon sensitivity, and the surface here retains its original freshness, the pigment exhibiting the characteristic matte intensity that distinguishes his finest works from this period. The piece situates naturally within collections focused on postwar European abstraction, Arte Concreta, or the broader international conversation around perceptual and kinetic painting, and its scale makes it well suited to a range of domestic and institutional contexts. Works from Spazio totale appear with increasing rarity on the market, making this a consequential addition to any serious holding in mid-century Italian modernism.