1 Sestertius Augustus

This is a modern novelty or collector fantasy piece — Rome issued no paper currency, and the sestertius was a bronze coin denomination used from the late Republic through the third century AD. The "Augustus" branding and 2007 date place this squarely in the commemorative or educational reproduction market, likely produced for a museum gift shop, themed event, or collector set rather than any issuing authority with legal tender status.

The watermark is an unusual inclusion for a piece with no monetary function — possibly added to discourage casual copying, or simply to lend the item a veneer of authenticity it cannot historically claim.