Which ancient civilization pioneered the use of specialized shop signs with pictorial symbols to aid customer navigation in their marketplaces?

The marketplaces of ancient civilizations were sophisticated centers of commerce that utilized various visual merchandising techniques to attract customers. From the strategic display of goods in the Roman Forum to the elaborate market stalls of ancient China, visual merchandising has deep historical roots. This trivia question challenges your knowledge about how ancient merchants displayed their wares to maximize sales and brand recognition in these early commercial environments.

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Ancient Egypt, with papyrus shop signs showing detailed illustrations of available goods
Ancient Rome, with carved stone and painted wooden signs displaying trade symbols and merchant names
Ancient China, with silk banners showing calligraphy representing different merchant families
Ancient Greece, with clay tablets at entrances depicting the gods associated with specific trades