Hello all of you!  First of all: The MMD is really great!  I got
many valuable replies (postings and private communications) to my
questions, posted on MMD 02.12.18.  I thank you all for your help to
identify my "Rueckenklavier".  Special thanks to Robbie for his work
to add the image and the MIDI file of the tuning scale to my original
posting.  [ See http://mmd.foxtail.com/Pictures/greinacher3.html ]

Now let me add some additional remarks:

1.  Craig Smith mentioned the brass fittings on the back of the
Rueckenklavier.  Yes, these fittings are all mounted on the back of
my instrument.  One of the brackets on the bottom of the instrument
is an open hook, which makes it easier to get the strap on and off.
All these fittings are not of brass, but of iron.

2.  Craig was guessing that my instrument plays "Turkish" because of
bad tuning and adjustment.  He is absolutely right that this might
happen when a beginner would try to do the job.  I suffered this
experience years ago, too.  This time -- it's a good rule! -- I first
made some basic restorations, adjustments, tuning, and checked
especially the adjustment of the barrel, etc., before I started to
play the instrument.  I tuned it to A = 425 Hz, following the scale as
burned onto the pin block.  The result is, as mentioned before, Turkish
"Janizary music".

3.  Philip Jamison brought up the term "laterna"; what does that mean
exactly?  Could I find a picture of a laterna somewhere?  I will try to
get the EMI CD with laterna music and will compare it with the sound of
my instrument.

4.  As Christofer Noering mentioned, some letters printed on the label
can be identified, but the rest is really very bad (same on the
original label).  My hope still is that somebody could identify the
graphics on the label.  That could be the key to find a similar or same
label on any other instrument with the makers name.

5.  As Robbie suggested in his email to me, I will try to find one of
the many Turkish families living around here (Nuremberg!) which might
have the skills to identify traditional Turkish music.  But I do not
feel strong enough to follow Robbie's suggestion and carry my back
piano on my back to meet and ask Turkish people on the streets of
Nuremberg -- it weighs 41 kg [90 pounds]!

Many thanks again, and I wish all the mechanical music enthusiasts,
collectors, experts and friends Merry Christmas and all the best for
the New Year!

Christian Greinacher
Roettenbach, Germany  (in Frankonia, i.e., the northern part
of Bavaria, near Nuremberg)

 [ Photos and several MMD articles about the Greek laterna
 [ are at  http://mmd.foxtail.com/Pictures/laterna.html
 [ The CD, "Nikos Armaos - Laterna kai Defi", MINOS-EMI 724383483525,
 [ is listed at http://www.studio52.gr/grin_Nm.htm  price: 11.45 euro
 [ -- Robbie