Definition: In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Input: The owner had lent the precious instrument to a musician friend who took it on a train on Friday but forgot it when he got off at Bern, police said. 
  
 After a fruitless search by train staff, surveillance cameras spotted a passenger walking off with the violin at a different station and police launched an appeal for help. 
  
 The violin turned up Sunday in the lost-property office at Bern station. 
  
 Police did not disclose the names of anyone involved, nor the value of the instrument. 
  
 Around 600 violins made by Italian master craftsman Antonio Stradivari are still in existence. One fetched about £8.6 million in a 2011 charity auction for victims of the Japanese tsunami. ||||| The 1721 violin was bought by an anonymous bidder for around four times the previous auction record for a Stradivari violin, according to Tarisio, the online auction house for fine instruments. 
  
 Proceeds from the sale will go to aid Japan after the recent natural disasters through the Nippon Foundation's Northeastern Japan Earthquake and Tsunami Relief Fund. 
  
 The "Lady Blunt" was offered for sale by The Nippon Music Foundation, owners of some of the world's finest Stradivari and Guarneri instruments. 
  
 "While this violin was very important to our collection, the needs of our fellow Japanese people after the March 11 tragedy have proven that we all need to help, in any way we can," the foundation's president Kazuko Shiomi said in a statement. 
  
 "The donation will be put to immediate use on the ground in Japan." 
  
 Tarisio said interest among bidders was "massive." The instrument was owned for 30 years by Lady Anne Blunt, Byron's granddaughter. 
  
 It is one of around 600 violins, violas and cellos by the famed Italian maker Antonio Stradivari still in existence, and among the finest examples. 
  
 The last time it was sold publicly was in 1971, when it fetched a then-record £84,000 at Sotheby's. |||||
Output:
A Stradivarius violin likely worth millions of dollars was turned in to a Swiss lost and found. The owner had loaned it to a musician friend who left it behind on a train in Bern. Train staff searched in vain for it, then spotted another passenger on surveillance cameras walking off with it, reports the Telegraph. The identity of the returner was not released. Only some 600 violins made by Italian master craftsman Antonio Stradivari still exist. One sold for close to $15 million at a charity auction last year. In 2008 a $4 million Stradivarius left by a musician in a New York taxi was returned by the cabbie.