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There is widespread agreement that the individual depicted by the bust is the Roman politician Gaius Julius Caesar, who was one of the most significant figures in the end of the Roman Republic in the first century BC. The marble inlays in the eyes are modern, as is the podium. A gap in the right ear was also repaired at first, but is now once more in a fragmentary condition. The bust is largely intact, but there are small modern restorations to the seam of the tunic and toga on the right hand side. This increases the sparse appearance of the hair and head. The short, curled hair is combed forward from the back, but is merely engraved on the sculpture, not depicted in three dimensions. The long, straight nose, the slight Adam's apple and the narrow-lipped mouth contribute to a lean, even emaciated appearance. The face is long, narrow and angular with marked cheekbones, a high forehead and a strong chin. Lines on the neck result from the incline of the head to the right hand side. Signs of old age, like the receding hairline, lines on the forehead and nose, lightly wrinkled cheeks, deep nasolabial folds and crow's feet around the eyes.
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It is made of green slate rather than the usual marble, but the execution is nevertheless outstandingly good. The portrait is 41 centimetres high and therefore a little over life size. The Green Caesar is a portrait of Gaius Julius Caesar made of green slate kept in the Antikensammlung Berlin, which was probably made in the first century AD.
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