  The ALICE collaboration performed the first rapidity-differential measurement
of coherent J/$\psi$ photoproduction in ultra-peripheral Pb-Pb collisions at a
center-of-mass energy $\sqrt{s_{\rm{NN}}}$ = 5.02 TeV. The J/$\psi$ is detected
via its dimuon decay in the forward rapidity region ($-4.0 < y < -2.5$) for
events where the hadronic activity is required to be minimal. The analysis is
based on an event sample corresponding to an integrated luminosity of about 750
$\mu$b$^{-1}$. The cross section for coherent J/$\psi$ production is presented
in six rapidity bins. The results are compared with theoretical models for
coherent J/$\psi$ photoproduction. These comparisons indicate that gluon
shadowing effects play a role in the photoproduction process. The ratio of
$\psi'$ to J/$\psi$ coherent photoproduction cross sections was measured and
found to be consistent with that measured for photoproduction off protons.
