Which ancient civilization pioneered the use of maker's marks (early logos) on pottery as a form of brand identification and quality assurance?

Before modern retail strategies, ancient civilizations had their own sophisticated marketing approaches. From state-controlled economies in Egypt to the vibrant agoras of Greece and the extensive trade networks of Rome, merchants developed distinctive techniques to stand out in crowded marketplaces. This poll explores how ancient civilizations used early forms of 'brand mascots' to distinguish their products and build customer trust in an era before corporate logos and digital marketing.

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Ancient Greece, where potters in Athens stamped distinctive symbols on their wares around 6th century BCE
Ancient Egypt, where royal cartouches served as the first product endorsements for goods made for the pharaoh
Mesopotamia, where cylinder seals were primarily used to mark ownership of commercial goods
Ancient Rome, where the 'Ex Officina' stamp was first used on mass-produced goods from imperial workshops