Abstract
The analytically-continued O(4) amplitudes of Freedman and Wang are studied for spinless scattering. It is shown that as a consequence of the absence of Gribov-Pomeranchuk poles in the J-plane amplitudes at right-signature nonsense points, the O(4) amplitudes have the symmetry properties required to carry out the analog of the Mandelstam form of the Sommerfeld-Watson transformation. The contribution of a single Lorentz pole to asymptotic behavior is then considered, and it is suggested that in a slightly modified form it may be useful for extending Regge analysis to lower energies.