SPRINGFIELD, Ill. (AP) — The popular butter cow sculpture has been unveiled at the Dairy Building on the Illinois State Fairgrounds.

The Illinois agriculture director and State Fair manager attended the 3 p.m. ceremony Thursday.

The sculpture depicts a cow being milked by a boy who is waving to a woman.

The 500-pound bovine is made of unsalted butter. Built from scratch, it has been an unofficial mascot of the fair since the 1920s.

Fair organizers have said they're not changing security procedures after vandals threw paint on a butter cow at the Iowa state fair last year. A refrigerated case holding the Illinois sculpture is always locked.

The cow is a project of the Midwest Dairy Association and paid for by its members.

The fair runs Aug. 7-17.

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Online:

Butter cow: http://bit.ly/1vcpCvH