A solitary elderly man emerges from the darkness, his face illuminated by a dramatic shaft of light that reveals the deep furrows of age across his brow and cheeks. He wears a dark beret that casts a shadow over his forehead, its broad shape spreading across the upper right of the composition. His white beard, rendered with thick, textured brushstrokes, descends from his chin and stands out starkly against the surrounding gloom.

The man's gaze is cast downward, his eyes half-hidden beneath heavy brows, suggesting a moment of introspection or melancholy. Light falls unevenly across his features, accentuating the bridge of his nose, the arch of his brow, and the creases that mark his cheeks, while the rest of his form dissolves into shadow. The background is an impenetrable black, offering no hint of setting or distraction, so that all attention is focused on the sitter's face and expression.

Rembrandt applies paint in vigorous, expressive strokes, particularly in the beard and forehead, where the impasto catches the light and gives the surface a tactile quality. The composition is tightly cropped, with the man's head filling most of the panel and his shoulders barely suggested at the lower edge. Small details, such as the glint of light on the tip of his nose and the rough texture of his beard, reward close inspection and reveal the artist's mastery of light and texture. Rembrandt van Rijn created this portrait in 1643, as noted in the catalogue and supporting records.

The painting is executed in oil, a medium that allows for the subtle transitions of tone and the rich surface effects seen here. No additional figures or objects appear; the focus remains entirely on the sitter's visage and the psychological presence it conveys.