The decades-old knickers, which were put up for sale on the online auction site earlier this month, has attracted 18 separate bids and eventually sold for 11,390 pounds (more than Rs one million), the Daily Telegraph reported.
The selling price is said to be about 2,000 pounds more than a pair of Queen Victoria's bloomers which were sold at auction last year, the paper said.
The vintage garments, embroidered with the letter E that may stand for "Elizabeth" and a picture of a crown, was sold by the estate of Baron Joseph "Sepy" de Bicske Dobronyi, described as an aristocrat, art collector, traveller and Playboy, according to the report.
It is said the bloomer-style knickers, which have not been confirmed as authentic by any official sources, were left on a private aeroplane during the Queen's visit to Chile in 1968. They were then picked up by the pilot and given to his friend, Hungarian-born Dobronyi.
After the latter died in 2010, his family discovered the garment and has now auctioned it on internet site eBay.
The knickers, listed as an "item that has been previously used", are advertised as being in good condition, despite some yellowing with age.
More From This Section
They have four small pearl-like button and a monogram of the Royal crown, along with two flowers on a stem with leaves, and are hemmed with crocheted lace.
The undergarment, which has a 26 inch waist and is 16 inches long, is advertised on the website as a "once in a lifetime opportunity to acquire and own a piece of collectable Royal memorabilia".
Dobronyi, who lived in America, was a jeweller, sculptor and artist, and has been called "the Hugh Hefner of Miami".
Last year, a pair of knickers owned by Queen Victoria fetched 9,375 pounds at a British auction house.