  Diquark-antidiquark states are expected to exist as a natural complement of
mesons and baryons. Although they were predicted long ago, and some candidates
were found experimentally, none has, as yet, been reliably identified. We
suggest that the search for the so-called $C(1480)$-meson in reactions such as
photoproduction $\gamma N\rightarrow\phi\pi N$ and $K N \rightarrow \phi \pi
\Lambda$ should provide a decisive way to settle this issue. Estimates of the
cross sections are given using present experimental information on the C-meson
and assuming its diquark-antidiquark structure. Sizable cross sections are
predicted (of the order of 0.1 $\mu$b for photoproduction and of the order of
0.1 mb for $KN$ at the maximum with an insignificant background). Failure to
find this kind of signal would imply that the C-meson is {\it not} a
diquark-antidiquark state.
