  In this paper we provide theoretical LDA+DMFT support of recent ARPES
experimental observation of the so called hidden hole like band and
corresponding hidden Fermi surface sheet near $\Gamma$-point in the
K$_{0.62}$Fe$_{1.7}$Se$_2$ compound. To some extent this is a solution to the
long-standing riddle of Fermi surface absence around $\Gamma$-point in the
K$_x$Fe$_{2-y}$Se$_2$ class of iron chalcogenide superconductors. In accordance
with the experimental data Fermi surface was found near the $\Gamma$-point
within LDA+DMFT calculations. Based on the LDA+DMFT analysis in this paper it
is shown that the largest of the experimental Fermi surface sheets is actually
formed by a hybrid Fe-3d($xy,xz,yz$) quasiparticle band. It is also shown that
the Fermi surface is not a simple circle as DFT-LDA predicts, but has
(according to the LDA+DMFT) a more complicated `propeller'-like structure due
to correlations and multiorbital nature of the K$_x$Fe$_{2-y}$Se$_2$ materials.
While the smallest experimental Fermi surface around $\Gamma$-point is in some
sense fictitious, since it is formed by the summation of the intensities of the
spectral function associated with `propeller' loupes and is not connected to
any of quasiparticle bands.
