Which ancient civilization created the first widely recognized commercial trademark system, with pottery makers stamping distinctive symbols on their wares to indicate workshop origin?

Before modern logos and trademarks, ancient civilizations had their own methods of brand identification and product authentication. Various symbols, seals, and marks were used to indicate ownership, origin, and quality of goods traded across vast networks spanning from Mesopotamia to the Mediterranean. This poll explores how ancient merchants protected their brand identity in a world of expanding commerce and international trade.

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Ancient Greeks, with potters in Athens using unique maker's marks on exported ceramics around 500 BCE
Ancient Egyptians, with royal cartouches serving as quality seals for goods produced for pharaohs
Mesopotamians, with cylinder seals used by merchants in Babylon to authenticate trade goods
Ancient Romans, with the 'ex officina' stamp system used by artisans across the empire