Which ancient civilization first used distinctive maker's marks or 'logos' on commercial products to signify quality and origin?

The ancient world wasn't just about conquests and monuments - it was also home to sophisticated commerce and product innovation. Ancient merchants developed remarkable techniques to distinguish their goods in competitive marketplaces from Mesopotamia to Rome. This trivia question explores how ancient civilizations implemented early forms of brand positioning and product differentiation that would be recognizable to modern marketing professionals.

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Ancient Egypt, with royal cartouches on luxury goods (c. 3100 BCE)
Mesopotamia, with cylinder seals on clay tablets and goods (c. 3500 BCE)
Ancient China, with imperial stamps on silk and pottery (c. 2700 BCE)
Ancient Greece, with potter signatures on ceramic vessels (c. 700 BCE)