Which ancient Egyptian symbol served as the earliest form of 'logo' used consistently to brand products from royal workshops?

Before modern corporate logos, ancient civilizations used symbols to mark ownership and authenticity of goods in trade networks. The Egyptians developed one of history's earliest 'brand management' systems through distinctive seals and cartouches that identified products from specific workshops, temples, or royal estates. These marks guaranteed quality, indicated source, and built reputation - functioning much like today's corporate logos. Test your knowledge about these ancient precursors to modern branding!

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The cartouche - an oval with a horizontal line at one end, containing the name of a royal person
The Eye of Horus - a protective symbol meant to ward off evil from products during transport
The ankh - a symbol of life placed on products to extend their shelf life and freshness
The scarab beetle - representing rebirth and used primarily on pottery to indicate premium craftsmanship