  An effective anomalous CP-violating Z-gamma-gamma coupling can give rise to
observable CP-odd effects in gamma gamma -> t bar{t}. We study certain
asymmetries in the decay lepton distributions in gamma gamma -> t bar{t}
arising from top decay in the presence of a CP-violating Z-gamma-gamma coupling
as well as a top-quark electric dipole coupling. We find that a photon linear
collider with geometric luminosity of 20 fb^{-1} can put limits of the order of
0.1 on the imaginary part of the CP-violating anomalous Z-gamma-gamma coupling
using these asymmetries.
