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On the left is Marx's last known photo. And then he had his beard shaved off. On the right is a photomontage. [More inside]
(hexbear.net)
Left: last photograph of Karl Marx, taken by E. Dutertre in Algiers, on 28 April 1882. Right: a photomontage-based upon Marx's own correspondence, where he said that the photo was taken just a short while before he went to the barber to have his hair cut and his beard shaved off, and shows how he may have looked after his visit to the barber.
It definitely seems wrong to look at the guy without the full beard. He seems naked.