 A National Archive file released in 2012 revealed that Bunton's son, John, had confessed to the theft in 1969.Bunton was a retired bus driver who earned £8 a week in 1961 (equivalent to £ in ).In that year, Charles Bierer Wrightsman, a rich American art collector who made his money in the oil business, purchased Goya's painting "Portrait of the Duke of Wellington" for the sum of £140,000 ($390,000).