Which ancient civilization first introduced the concept of 'branded merchandise' with maker's marks stamped on retail goods to indicate quality and origin?

Long before modern shopping malls and e-commerce, ancient civilizations pioneered sophisticated retail systems. From the agoras of Greece to the forum markets of Rome, and the grand bazaars of Mesopotamia, ancient retailers developed innovative merchandising techniques, customer service practices, and brand identities. This trivia question explores a fascinating retail innovation from ancient times that continues to influence modern shopping experiences.

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Ancient Rome, where artisans stamped 'SPQR' (Senatus Populusque Romanus) on premium goods to indicate official approval
Ancient Egypt, where royal cartouches on products signified items were made for or approved by the pharaoh
Ancient Mesopotamia, where Babylonian merchants used cylinder seals to mark clay containers with their unique business symbols
Ancient China, where Han Dynasty silk producers wove specific patterns to identify their workshop's products