  The cross section of the reaction $^3$He$(\gamma,pn)p_{spec}$ in the energy
range 150 - 450 MeV has been calculated in a quasifree two-body model and
compared with a recent kinematically complete experiment. In comparison with
free deuteron disintegration the cross section is increased by a factor of
about 1.5 in reasonable agreement with the data for photon energies above 200
MeV. At lower energies the data deviate from the two-body behaviour and thus
suggest a more important role of the spectator requiring a more exact
treatment.
