  The spectroscopic predictions of the Ademollo-Veneziano-Weinberg dual model
are critically tested in view of the modern experimental data. The predicted
equidistance of masses squared for chiral partners is shown to be violated high
in energies, instead one observes an approximate degeneracy of these
quantities. This phenomenon can be interpreted as the restoration of
Wigner-Weyl realization of chiral symmetry for highly excited states. The scale
of complete restoration is expected to be 2.5 GeV. A multispin-parity cluster
structure of meson spectrum is revealed.
