  Dual/binary Supermassive Black Hole (SMBH) systems are the inevitable
consequence of the current Lambda Cold Dark Matter cosmological paradigm. In
this context, we discuss here the properties of MCG+11-11-032, a local
(z=0.0362) Seyfert 2 galaxy. This source was proposed as a dual AGN candidate
on the basis of the presence of double-peaked [OIII] emission lines in its
optical spectrum. MCG+11-11-032 is also an X-ray variable source and was
observed several times by the Swift X-ray Telescope (XRT) on time scales from
days to years. In this work, we analyze the SDSS-DR13 spectrum and find
evidence for double-peaked profiles in all the strongest narrow emission lines.
We also study the XRT light curve and unveil the presence of an alternating
behavior of the intrinsic 0.3-10 keV flux, while the 123-month Swift BAT light
curve supports the presence of almost regular peaks and dips almost every 25
months. In addition, the XRT spectrum suggests for the presence of two narrow
emission lines with rest-frame energies of E~6.16 keV and E~6.56 keV. Although
by considering only the optical emission lines, different physical mechanisms
may be invoked to explain the kinematical properties, the X-ray results are
most naturally explained by the presence of a binary SMBH in the center of this
source. In particular, we evidence a remarkable agreement between the putative
SMBH pair orbital velocity derived from the BAT light curve and the velocity
offset derived by the rest-frame Delta_E between the two X-ray line peaks in
the XRT spectrum (i.e. Delta_v~0.06c).
