Last Sunday, I visited the restaurant in the former Wrigley mansion,
located in Phoenix, Arizona.  In the living room sits a 1929 Duo-Art
with a remote cabinet that holds several rolls, any one of which can be
selected remotely.  The waiter claimed the piano was "worth millions of
dollars."  I laughed, almost involuntarily, and excused myself when the
guy looked puzzled.  The piano is shown in this YouTube video:

  https://www.youtube.com/watch?v=MLNsw1b-ovI 

This instrument seems to have become an urban legend with claims of
value stated as high as 14 million dollars.  It, obviously, isn't.
However, what would a reasonable price for this piano be?  Supposedly,
the Wrigleys sold the house with the stipulation that the piano stayed
in the house permanently.

Larry Mayo

 [ Another Wrigley "10 million dollar piano" valuation is at
 [ https://www.youtube.com/watch?v=DViYpAik-ZU  -- Robbie