Friday, if you buy one dozen doughnuts, you'll get a second dozen of glazed doughnuts for $1.
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The doughnut company is also celebrating the milestone with a new cake batter-filled doughnut.
The new creation is an Original Filled Doughnut that actually has cake batter inside.
The pastry is coated with strawberry icing and topped with sprinkles.
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The doughnut is available in select stores from July 15 - July 21.
Locations can be found on the company's website.
Video above is from a related story.