Which ancient civilization created what is widely considered the first standardized 'logo' system with consistent symbols stamped on products to indicate authenticity and origin?

Before modern corporate identities, ancient civilizations created powerful visual symbols that functioned remarkably similarly to today's logos. These symbols represented authority, ownership, and quality - just like modern brand logos. Test your knowledge about the earliest recorded instance of what we might consider logo design and brand identity in the ancient world.

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Ancient Egyptians with their cartouche system for pharaonic products
Mesopotamians with their cylinder seals for merchant identification
Ancient Greeks with their pottery maker's marks and signatures
Ancient Romans with their 'SPQR' symbol on official products