Which ancient civilization first used consistent 'maker's marks' or symbols on commercial products as an early form of brand identity to indicate workshop origin?

Before modern logos and marketing campaigns, ancient civilizations pioneered the concept of product identity and recognition. Merchants and artisans developed unique ways to distinguish their goods in bustling marketplaces from Mesopotamia to Rome. This poll explores one of history's earliest examples of deliberate brand identity - a practice that would evolve into today's sophisticated branding strategies. Test your knowledge about how ancient producers first marked their products for recognition and quality assurance.

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Ancient Egypt (using hieroglyphic seals on pottery to indicate royal workshop production)
Mesopotamia (using cylinder seals on clay containers to authenticate contents)
Ancient Greece (using potter signatures and distinctive designs on ceramics)
Roman Empire (using 'ex officina' stamps on bricks and pottery to indicate manufacturing location)