SAN FRANCISCO (AP) — One of the biggest gold nuggets found in modern times in Northern California’s historic Gold Country is going up for sale.

Weighing in at more than 6 pounds, the so-called Butte Nugget is expected to carry a price tag of $350,000.

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The San Francisco Chronicle reports that the owner of the nugget asked dealer Don Kagin to keep his name and the location of the discovery secret.

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What is known is that it was found in July by a gold hunter on public land in the Butte County mountains.

The nugget will be unveiled Thursday at the San Francisco Fall Antiques Show.

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Copyright 2014 The Associated Press.