TEHRAN (MNA) -- During the latest season of excavations of the northern gate of Takht-e Suleiman, an ancient Zoroastrian fire temple located in northwestern Iran, the stamps of two seals were discovered which indicate that objects entered Takht-e Suleiman from other regions with special tags attached to them which seem to be advertisements. They signify that an early form of advertising was being practiced during the Sassanid era (224-642 C.E.), Yusef Moradi, the head of the excavation team, said on Friday. “The team began its excavations in early August and found the stamps of two seals at the upper levels...