Interior view of the Grand Trianon, room of Empress Josephine de Beauharnais (wife of Napoleon).
This image is a photochrome. Similar to a lithograph, the individual color layers are printed separately and thus receive their radiant colorfulness. Photochromes from Photochrom Zürich, abbreviated P. Z., can often be identified by a serial number followed by the letters P. Z. and a caption in gold.