Unidentified photographer / artist 1868 Papular Syphilide
Book illustration Google Books Balmanno Squire A Manual of the Diseases of the Skin (London: John Churchill and Sons, 1868) between pages 143 and 144.
In an appendix on p.259 this photograph of a man aged twenty is described as follows:
The Photograph is a fair representation of the disease. It may be seen: That the papules are thickly strewn over the affected surface. That their average size is that of a hempseed. That they occupy chiefly the forehead, the chin, and the neighbourhood of the mouth and nostrils. That over the lower half of the face, where they are comparatively recent, their colour is a rosy red. That the larger papules are surmounted by a small white scale. That on the forehead, where many of them are fading, the skin has assumed a dull tawny hue. And it may be gathered, from the tonicity of the features and the clearness of the eyes, that the patient's general health has as yet undergone no deterioration.