Which ancient civilization invented the first known retail loyalty program, offering clay tokens to regular customers that could be exchanged for discounts on future purchases?

The ancient world had sophisticated retail systems long before modern technology. From Mesopotamian clay receipts to Roman brand markings, ancient civilizations developed innovative methods to manage commerce, establish brand identity, and track inventory. This poll challenges your knowledge about how ancient merchants solved retail problems with ingenuity that would influence commerce for millennia to come.

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Ancient Egypt - where merchants in Alexandria gave 'scarab seals' to regular customers
Mesopotamia - where Babylonian merchants issued 'kudurru' loyalty tokens
Ancient Greece - where Athenian market vendors distributed 'ostraka' tokens to preferred patrons
Ancient Rome - where shop owners on the Via Sacra gave 'tessera' medallions for repeat business