A Stolen Flute

My teacher was in Japan in July and his shakuhachi was stolen.  He had placed his backpack down in the Tokyo Shinkansen station with some other of his luggage.  When the train came, the backpack was gone.  A police report was filed and the backpack was recovered a few days later, but the shakuhachi was gone.  If you have any information about this shakuhachi, please help and let us know.  It has a lot of sentimental value, as this shakuhachi was a gift from a temple abbot, given to my teacher when he left to start a new career in the United States in the 1960s.  The hanko reads Truth. We hope it can be recovered.  I will be in Tokyo, Nara, Osaka, Kyoto and Wakayama in September and October to recover the instrument, should it be found.
More here on the history of the flute: http://myoanshakuhachi.blogspot.com/2012/08/the-gift-from-shinnyo-do-temple.html

Hanko--Shin--Truth