As a follow-up of the X–ray serendipitous detection of the source 2MASX J14585116 - 1652223 , medium-resolution optical spectroscopic observations collected at the 1.5-metre “ Cassini ” telescope of the Astronomical Observatory of Bologna were performed . This allowed us to determine the extragalactic nature of this X–ray source , which is a Type 2 Seyfert galaxy at redshift z = 0.068 \pm 0.001 . This result points to the fact that 2MASX J14585116 - 1652223 hosts one of the very few Active Galactic Nuclei detected so far in the hard X–ray band above 20 keV , in particular at z > 0.05 . Other optical and X–ray properties of this object are also discussed .