Which ancient civilization's pottery was so distinctive and highly valued that merchants would stamp the clay vessels with official seals to prevent counterfeiting and guarantee authenticity?

Before modern retail existed, ancient civilizations created sophisticated trading systems with branded goods that were recognized across vast empires. Some products were so well-crafted and desirable that their reputation traveled thousands of miles along trade routes. This poll explores one of history's most famous ancient branded products that helped shape early commerce and established quality standards that influenced trade for centuries to come.

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Roman 'Terra Sigillata' pottery with maker's marks
Egyptian alabaster vessels with pharaonic seals
Mesopotamian cuneiform-marked storage jars
Chinese Han Dynasty silk packaging with imperial stamps