Which ancient civilization first used standardized merchant seals as 'logos' to authenticate products and prevent counterfeiting in long-distance trade networks?

Before modern corporate logos, ancient civilizations had their own powerful symbols for commerce and trade. These marks identified artisans, workshops, and merchants across vast trading networks from Rome to Carthage, Egypt to Mesopotamia. Pottery stamps, merchant seals, and workshop insignias functioned much like today's brand identities, conveying quality, origin, and authenticity to consumers across the ancient world. Test your knowledge about these early commercial identifiers that helped shape the earliest global marketplace!

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Ancient Rome with their 'ex officina' pottery marks
Mesopotamia (specifically ancient Sumerians) with cylinder seals for commercial transactions
Ancient Egypt with cartouche stamps on exported goods
Ancient Greece with amphora potter's marks denoting city-state origin