The current owner of this Olympus told me that is the camera that Daido Moriyama used for his '71 NY series. He didn’t mean that it’s the same model of camera- but rather, it’s THE actual camera Moriyama took to New York in 1971.
Similar to Winogrand’s M4, it could be seen as an incredible collector’s item but it’s good to know that this camera is still being regularly used.
Original first edition copies of ‘71 NY are rare and or often prohibitively expensive. The reprint created by Andrew Roth in 2002 was well received and in turn is somewhat difficult to find today. You can read the story of how this book came about here.
Sample photos from the book and ordering/sourcing information for it can be found in the Japan Exposures bookshop: 71-NY Daido Moriyama