Which ancient civilization created one of the earliest documented examples of product branding, using distinctive symbols on pottery to indicate the workshop of origin?

Before modern marketing campaigns and global brands, ancient civilizations had their own version of product branding and trade identities. Merchants from various ancient cultures developed early forms of branding to distinguish their goods from competitors. This poll challenges you to identify which ancient civilization pioneered one of the earliest documented forms of product branding that archeologists have confirmed with physical evidence.

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Ancient Greece, where potters in Athens stamped their distinctive maker's marks on ceramic vessels (6th-5th century BCE)
Ancient Egypt, where royal cartouches were stamped on products made exclusively for pharaohs (3000-2500 BCE)
Ancient Rome, where brick makers used stamps indicating their manufacturing legion (1st century CE)
Ancient China, where Han Dynasty silk producers wove identifying patterns into their textiles (200 BCE)