An auctioneer has hired experts to try to verify claims by the owner of the century old instrument that it belonged to Wallace Hartley, the leader of the vessel’s eight-man musical ensemble. If proved, it could become the most valuable Titanic artefact ever to be considered for auction. But the claim is being treated with caution as a result. Hartley and his fellow musicians earned legendary status for their decision to play on as the ship sank on its maiden voyage on April 15, 1912. They are said to have played the hymn “Nearer My God to Thee” after the...