  We performed long-slit spectral observations of two SB-type galaxies: NGC
5347, UGC 1344. They were previously suspected as the galaxies with unusually
low mass-to-light ratios (on the ground of mass estimates from the Hi
linewidths), which are in conflict with their observed colours. The
observations were conducted at the Russian 6-m telescope. The aim of the study
was to clarify the kinematics and structure, as well as the properties of
stellar populations of the galaxies. The results of observations disproved the
peculiarly low mass-to-light ratios of both galaxies. The most probable reasons
of underestimation of their masses are discussed. We tried to reproduce the
main observed features of kinematical profiles of the galaxies in the N-body
simulations of barred galaxies. We found that both galaxies possess central
components of different structure. Indeed, the age and velocity dispersion of
stellar population in NGC 5347 are low in its innermost part in comparison to
that of the bulge or a bar, which agrees with the presence of nuclear
kinematically decoupled disc. It probably was formed due to the bar which
supplied the inner region with gas. The kinematical profiles of the second
galaxy UGC 1344 give evidences in favour of the central peanut-shaped bulge. In
spite of the different luminosities of the two galaxies, they possess nearly
equal (close to solar) central stellar abundance and the flattening of the
stellar metallicity gradient in the bar regions. However, in the less luminous
NGC 5347 the mean stellar age is younger than that in UGC 1344.
