Sister of Mrs Jacqueline Kennedy, wife of the US president, sits with a friend Mr Felix Horbord during the sale of the Rembrandt painting "St Bartholomew" at an auction of the old master paintings at Sotheby's, London today. The Rembrandt was one of only two comparable Rembrandt's of the 1660s in Britain and was owned by major WMP Kincaid Lennox of Downton Castle, Shropshire. Rembrandt was sold to dealer Mr Colin Agnew, acting for a client for ?90,000. 27 June 1962