A lock of Elvis Presley’s hair sold for $18,300 to an anonymous telephone bidder at a Chicago auction Sunday, The Chicago Tribune reports.

The locks were part of an Elvis memorabilia collection offered by Leslie Hindman auctioneers in The Windy City. The collection, which belonged to former Presley fan club president Gary Pepper, also includes stage clothes, records, and Christmas cards.

Pepper died in 1980 and left the collection to his nurse, who is now putting it up for sale. Early estimates projected the hair would sale for between $8,000 and $12,000.

The hair was shorn from the legend’s head when he joined the US Army in 1958.