Which ancient civilization first implemented standardized price tags on merchandise in marketplaces?

The ancient world was home to sophisticated commerce systems that laid the foundations for modern retail. From Mesopotamian markets to Roman trading forums, ancient civilizations developed innovative pricing strategies that influenced how goods were valued and sold. This trivia question explores an intriguing aspect of price communication that bridges ancient commercial practices with today's retail environment.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Ancient Egypt, where papyrus price markers were attached to goods in bazaars around 1300 BCE
Babylon, where clay tablets with fixed prices were displayed on market stalls circa 1750 BCE
Ancient Rome, where the Edict of Diocletian in 301 CE first mandated displayed pricing to prevent inflation
Ancient Greece, where merchants used ostraka (pottery fragments) as price markers in the Agora from 500 BCE