I now know the Steinway Duo-Art grand I have been told about is an XR
in a Louis XV case, serial number 239713, which means it was made in
what piano rebuilders refer to as the "Golden Era of piano building."

An XR Duo-Art is a Steinway M model with an extended case to house
the player parts.  These Steinway M models from this era in plain
cases typically sell for around six thousand dollars in un-restored
condition.  It was one of the most popular size pianos they made and
still make today.  I have looked at photos of the instrument and
believe it to have been retubed in the mid nineteen-seventies.
Otherwise is it a clean unrestored Steinway.

The piano broker dealer who has this piano wants $7,500 or best offer
for this piano.  Considering it is a rare art case (which bring much
more money) then I think his price is fair.  He will deliver at that
price to a commercial address anywhere in the U.S.A.  It is currently
located in California.  Contact me and I will try to help.  It needs
to remain a player piano and be appreciated!

Don Teach
Shreveport, Louisiana