Hi All,  I noticed the listing of the new piano roll recordings by
Slawomir Dobrzanski.  There were three Welte-Mignon recordings of
Mazurka Op. 6 No. 1; their roll numbers are 7177, 126, and 7011.
I own only 7011, played by Darius Mlhaud; this recording also includes
Op. 6 #2.  I like this recording and the previous owner did also
because it has had a red dot attached to the box label.  I do not know
if this has ever been recut but it would be a very good candidate.
This recording, 7011, was made in March of 1927.

Allen E. Ford