She's not sure.
But she's celebrating with family and friends in Flint Township, Mich., about 55 miles northwest of Detroit.
Medicare records show her birth date as March 5, 1901.
But an old family Bible lists 1898 as the year of her birth.
There's no legal record because she was born at home.
Be it 108 or 111, Caldwell is happy.
She tells The Flint Journal this birthday is special.
She's a great-great-great-grandmother to at least seven.
She adds she stopped counting a while ago.
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