Which ancient civilization first used standardized royal seals on products to guarantee quality and authenticate goods in long-distance trade networks?

Before modern logos and marketing campaigns, ancient civilizations had their own methods of product branding and commercial identification. Merchants, craftsmen, and ruling powers used distinctive symbols to mark their goods and establish trust in the marketplace. From pottery stamps to royal seals, these early 'corporate identities' helped consumers identify quality products and authentic goods in markets that often spanned multiple cultures and languages. Test your knowledge about these early forms of commercial symbolism!

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Ancient Egypt, with the pharaoh's cartouche marking goods from royal workshops
Mesopotamia, specifically the Indus Valley Civilization with their square steatite seals
Ancient Rome, with the SPQR stamp denoting official government-sanctioned merchandise
Classical Greece, where Athenian silver owl coins served as quality marks on exported pottery