I have a 150 Spec organ and it was formerly a North Tonawanda.  ('150
Spec' denotes a non-Wurlitzer organ converted to play 150 rolls.)
It has 129 pipes in it.  Among the resources are two sets of violin
melody 8' pipes and two sets of accompaniment violin 8' pipes.  They
do give the organ a distinct sound.

I don't tune the sets as celeste sets, though, as the organ is a
working organ and with the changing humidity and temperature there is
enough pitch variation that I felt it was unnecessary to do so.

The celesting is evident more on some days than others though, again
due to the changes in humidity and to a lesser extent to temperature
variation.

With four sets of 8' string pipes playing in the melody and
accompaniment it produces a pleasant sound that is greatly different
than my Wurlitzer 146-B with 105 pipes, although they both play the
same rolls.

Hal Davis