5909084 Advertising chromolithography of Guerin Boutron chocolates (chromolithograph) by French School, (20th century); 48.04x29.83 cm; (add.info.: The Parisian family Guerin Boutron founded the company in around 1775. The factory manufactures chocolate, to retain its customers Guerin Boutron attached to its tablets chromolithography on various topics, here trees, horse chestnut); Photo by Archives Toutain; French, out of copyright.