Which of these is considered the world's oldest continuously used product logo or trademark, dating back to ancient Mesopotamia?

Before modern marketing and global corporations, ancient civilizations had their own recognizable product brands and consumer goods. The oldest civilizations developed sophisticated commercial systems with distinct product identities and marketing techniques. Some ancient brands were so effective they influenced consumer behavior across multiple empires and left archaeological evidence we can still identify today. Test your knowledge about the world's earliest consumer products and their unique identifiers!

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The Red Seal of Ur - a distinctive red circle stamp found on clay vessels that contained premium beer from the royal brewery (c. 3000 BCE)
The Bass red triangle - used on ale bottles and recognized in ancient Egyptian tombs before being adopted by the modern brewery (c. 2500 BCE)
The Fortis Lamp mark - a maker's mark stamped on Roman oil lamps produced by the Fortis workshop (1st century CE)
The Sphinx Seal - a quality mark pressed into papyrus scrolls from the Library of Alexandria's official production house (c. 250 BCE)