Which ancient civilization pioneered the concept of 'brand seals' - unique markings on products that identified specific craftsmen or workshops?

Before billboards and TV commercials, ancient civilizations had their own sophisticated marketing strategies to promote goods and services. From Mesopotamian clay tablets advertising beer to Egyptian papyrus posters promoting local markets, the history of product promotion dates back thousands of years. Test your knowledge about how ancient merchants and craftspeople advertised their wares and built brand recognition in the ancient world.

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Mesopotamians, who stamped cylinder seals on clay containers to identify pottery workshops and guarantee quality
Ancient Egyptians, who painted hieroglyphic signatures on products made exclusively for pharaohs
The Indus Valley Civilization, who used animal symbols to mark products traded along the Silk Road
Ancient Greeks, who inscribed the names of Olympic victors on products to boost sales through celebrity endorsement