The x-ray in the centre is dominated by old woodworm holes in the panel, which show up as light and dark tunnels throughout the painting, and the remains of the cradle and the red seal on the reverse. As a result it is difficult to see if there are any pentimenti, but there are certainly no significant changes to the composition. Retouchings show up as faint dark areas in the photograph taken in ultra violet light on the right; they are mainly vertical in orientation and relate to the woodworm damage the panel has suffered.

© National Portrait Gallery, London