Which ancient civilization created the earliest known commercial logo, a distinctive symbol used by merchants around 3000 BCE to indicate the quality and origin of their products?

Before modern corporate identities, ancient civilizations created distinctive marks to represent their products and services. These early 'brand identities' served similar purposes to today's logos - establishing authenticity, origin, and quality. This trivia question explores one of the earliest documented examples of commercial branding in human history, showcasing how the fundamentals of visual brand identity have ancient roots.

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Mesopotamian potters, who stamped unique symbols on their clay vessels to identify their workshop
Egyptian papyrus makers, who used hieroglyphic seals to mark premium writing materials
Indus Valley traders, who carved merchant guild emblems on stone weights and measures
Chinese silk producers, who embroidered family crests on luxury textiles for royal courts