Dated 1446 and among the earliest independently dated Netherlandish portraits to survive, Petrus Christus's small oil-on-oak panel depicts an unnamed Carthusian monk with the flattened, deep-focus clarity that distinguishes Bruges painting of the period, an illusionistic fly resting on the trompe-l'oeil frame beneath the sitter's gaze. The panel's precise dating anchors it firmly within Christus's known output and the broader history of the small devotional or commemorative portrait. It entered the collection through the Jules Bache Collection in 1949, its provenance recorded without gap since that acquisition. For Scion, a securely dated work of this rarity is a reminder that documentary precision, more than iconographic charm, is what ultimately underwrites a fifteenth-century attribution.