  We make numerical comparison of spectra from angular-momentum projection on
Hartree-Fock states with spectra from configuration-interaction nuclear
shell-model calculations, all carried out in the same model spaces (in this
case the sd, lower pf, and p-sd_5/2 shells) and using the same input
Hamiltonians. We find, unsurprisingly, that the low-lying excitation spectra
for rotational nuclides are well reproduced, but the spectra for vibrational
nuclides, and more generally the complex specta for odd-A and odd-odd nuclides
are less well reproduced in detail.
