Dale Jr. shares classic photo of young Dale Sr. on Instagram

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This weekend's race at Talladega Superspeedway marks the 15-year anniversary of the late Dale Earnhardt's memorable 76th and final top series NASCAR win.

On Wednesday, Dale Earnhardt Jr. shared a vintage photo on Instagram of his father from, well . . . a really long time ago.

We bet you've never seen this. It's classic "Big E" -- but long before most of the racing world knew him.

Check it out: