Which ancient civilization first used standardized symbols on products as an early form of branding to guarantee quality and origin?

Long before modern marketing departments existed, ancient civilizations developed sophisticated brand strategies to distinguish their products in bustling marketplaces from Mesopotamia to Rome. Artisans, merchants, and rulers all understood the power of product differentiation and reputation management. This trivia question explores how ancient societies implemented early forms of branding to create consumer trust and product recognition across vast trade networks.

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Mesopotamia, where merchants stamped clay tablets with unique seals to authenticate goods in long-distance trade around 3000 BCE
Ancient Egypt, where royal cartouches on products indicated items made exclusively for pharaohs and high priests around 2500 BCE
Ancient Greece, where pottery makers signed their amphora and vessels to indicate workshop origin around 700 BCE
Roman Empire, where brick makers stamped their products with maker's marks to track quality control around 100 CE