I just picked up a number of QRS Soloelle rolls.  Upon inspection of
one of these rolls, it was noticed that they have expression coding on
the edges.  It looks like Recordo expression but a check of several
reference books do not list Soloelle rolls as a Recordo format.  In fact
Soloelle rolls are not even mentioned in any of these books.  The
classical rolls are played by some big name artists so it seems that
these rolls are probably from one of the main reproducing roll
companies masters.  To my amazement, these rolls would play on my Ampico
with rather limited expression.  Does anyone know any details about
these rolls and what expression system they were designed for?

                                        Regards
                                        Michael