Elvis Presley’s estate have cast doubt on the authenticity of items being offered for sale at auction. Graceland executives are suspicious of items being offered for sale by GWS Auctions – whose owner, Brigitte Kruse, is being sued for financial abuse by the late ‘Blue Suede Shoes’ hitmaker’s ex-wife Priscilla Presley – which are listed as being owned and used by The King, and have raised questions about various lots. Joel Weinshanker, managing partner of Elvis Presley Enterprises, told NBC News he became suspicious when a black grommet jacket, supposedly worn by Elvis in 1972 went up for sale…