Two private jets owned by Elvis Presley are up for auction. The luxury aircraft are expected to bring $10-$15 million through sealed bids.

The jets, "Lisa Marie" and "Hound Dog II," were personally designed by the King of Rock and Roll. One of the jets is complete with a gilded wash basin and luxurious sleeping cabin.

The Lisa Marie, named after his only daughter, was bought by Presley in 1975. He spent $300,000 refurbishing it to include a master suite with full-size bed and conference room. It also features a bathroom with gold taps and a stereo system with 50 speakers, reports the BBC.

Presley bought the Convair 880 jet in 1975, two years before his death, and spent about $300,000, refitting it and renaming the Lisa Marie, after his only daughter, who was born in 1968.

The tail is adorned with Presley's trademark TCB, for "Taking Care of Business."

The Hound Dog II, a Lockheed JetStar, was bought in 1975 as a stopgap while the Lisa Marie was being prepared. It arrived at Graceland in 1984.

The planes are being auctioned off by Julien's via sealed bids.

Neither jet is airworthy. They have been on display at Graceland for more than 30 years for fans to tour.

The last flight the Lisa Marie took was to transport Presley's former wife Priscilla Presley and actor George Hamilton to Presley's funeral.

The jet was sold by Presley's father, Vernon, in 1978, and had two owners before being bought by a consortium in a joint venture with the owners of Graceland to allow it to be displayed at the tourist hotspot.

The agreement with the owners and Graceland expires in 2015.

The planes are being sold as one lot, with the option to buy land next to Graceland to display them, independent of the Presley Museum.