  Self-consistent mean field (MF) and beyond-mean-field (BMF) calculations of
masses, separation energies and $2^{+}_{1}$ excitation energies of even-even
nuclei where experimental data is available are presented. The functionals used
are based on the Gogny D1S and D1M parametrizations and the method includes
beyond-mean-field corrections coming from both axial quadrupole shape mixing
and symmetry restorations without assuming gaussian overlap approximations. A
comparison between mean field, beyond-mean-field approaches and the
experimental data is provided. Additionally, the convergence of the results and
the possible reduction of the magic shell gaps by including BMF effects are
also discussed.
