Actually, for those who want to know a bit more about the photo:
The Alberttype, better known as Collotype, was one of the first 19th century forms of printing using a printing press that allowed accurate reproductions of photos in books, up to a point that it became difficult to distinguish them from real photos. Where previous printing methods suffered from harsh unrealistic contrast and bad half-tone reproduction, the Collotype could reproduce the grays of photos accurately. Its only 19th century rival was the Woodburytype. Both processes use dichromated hardened gelatine to form a matrix. But the Collotype depends on the non mixing properties of water and oil to form the final printed image, similar to modern day offset printing, while the Woodburytype used the hardened gelatine matrix to form a (metal) mould in which coloured gelatine could be poured, forming the image. Woodburytypes therefore have a surface structure, thick for shadows, thin for highlights in the photo, and is unlike most other print forms in this respect.