LE NATUREL SOAP - MARSEILLE. "In Constantinople. Rare lithographed letter carrier, cardboard support, circa 1915-20. good condition, upper left corner dull, trace of moisture at the top and fold at the bottom. Very rich scene of a market along the bosphorus, with the blue mosque in the background. On the reverse "a notice to housewives". Printer: "imp.B.Sirven édit.Toulouse - Paris". "The Savonnerie du Naturel was founded at the end of the 19th century by Alfred Rostand, a cousin of the famous Edmond Rostand. It was located on rue des Tyrans, rue Sainte.