HEALDSBURG (AP) — The artist who created an 800-pound (363 kilograms) sculpture of a hammer that was stolen from a North Bay community center is offering a $1,000 reward to nail the thieves.

The Santa Rosa Press Democrat reported Tuesday that Healdsburg artist Doug Unkrey made the offer. He made the 800-pound ball-peen hammer out of mixed metals. It has a long redwood handle and measures 21 feet (6 meters) long and the head is 6 feet (2 meters) tall.

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The piece, valued at $15,000, was loaned by the artist about a year ago to the Healdsburg Community Center. It vanished from the lawn sometime Oct. 5 or Oct. 6.

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An 800 pound piece of art resembling a massive ball-peen hammer at the Healdsburg Community Center was stolen sometime after October 5, 2018. (City of Healdsburg Facebook)

An 800 pound piece of art resembling a massive ball-peen hammer at the Healdsburg Community Center was stolen sometime after October 5, 2018. (City of Healdsburg Facebook)

Unkrey says it would have required about eight people or a flatbed trailer with a winch to carry off his work.

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