Most of us eschew pennies these days as having too little value to bother with, uncomplainingly allowing vendors to round purchases up to the nearest nickel or simply dropping any one-cent coins we receive as change into “leave a penny, take a penny” trays or tip jars. But for a little while, at least, people might want to start paying attention to those (formerly) copper coins — because a bank is seeding cities across the United States with 100 “lucky pennies,” each one worth a tidy $1,000 to its finder:

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Ally Bank is leaving ten “lucky pennies” each in the cities of Austin, Charlotte, Chicago, Denver, Detroit, Los Angeles, Miami, New York, San Diego, and Washington, D.C., placed in high-traffic pedestrian areas. The Ally pennies are slightly larger than typical pennies, feature the bank’s logo on the front, and bear a redemption code on the back that the finder can use at AllyLuckyPenny.com by 31 December 31 December to claim the $1,000 prize:

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Ally is leaving hints about the pennies’ locations on social media and rounding up the clues on their website:

Ally will be posting weekly updates online to keep track of which pennies are still waiting to be found.