Which ancient civilization created the first known branded consumer products with maker's marks that functioned similarly to modern trademarks?

While we often think of branding and product design as modern concepts, ancient civilizations developed sophisticated techniques to distinguish their goods in marketplaces spanning from Rome to China. Pottery makers stamped distinctive marks, Phoenician merchants used consistent packaging, and Egyptian artisans created recognizable visual styles. This poll explores how ancient civilizations approached what we now call 'product branding' and the surprising sophistication of their commercial strategies.

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Ancient Rome, with pottery stamps called 'sigillum' that indicated workshop origin and quality standards
Mesopotamia, where Sumerian merchants used cylinder seals on clay packaging to authenticate their products around 3000 BCE
Ancient Egypt, where royal cartouches on goods served as early product endorsements for the pharaoh's approved items
Ancient China, where Han Dynasty silk producers wove specific patterns into fabric edges to indicate workshop origin