Which ancient civilization first developed product branding by stamping maker's marks on merchandise to distinguish quality and origin?

The ancient world had sophisticated commercial systems long before modern retail. From Mesopotamian clay tablets tracking inventory to Roman advertising techniques, ancient civilizations pioneered many concepts we consider modern. This poll explores how ancient societies approached product development and marketing techniques that still influence today's retail landscape.

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Ancient Romans, who branded wine amphorae with producer seals and region of origin
Ancient Chinese, who marked silk products with imperial symbols indicating workshop and quality level
Mesopotamians, who stamped clay bricks and pottery with distinctive maker's marks around 3000 BCE
Ancient Egyptians, who marked papyrus scrolls with royal cartouches indicating approved products