DAGUERREOTYPE - CAMERA OBSCURA - Honoré DAUMIER - "Patience is the virtue of donkeys". 1840. Lithograph. Signed with the artist's initials in the plate. Ref: Delteil, n°805. Proof of the 3rd state of 3, published in the Charivari (text on verso). Plate from the "Proverbes et Maximes" series. Printed by Aubert & Cie, and published by Bauger in Paris. Nicknamed the "daguerreotype", this process involved fixing the positive image obtained in the camera oscura onto a copper plate coated with a silver emulsion and developed with iodine vapors. 26 x 19.5 cm. Condition B/C (cut at the limit of the 1st square line, some scattered foxing, trace of old horizontal and vertical median verticla fold).