A new set of 13 UV-bright post-HB candidate stars in the field of the Galactic open cluster NGC 6791 have been discovered from U,B imagery at the Italian Telescopio Nazionale Galileo (TNG). Owing to its high metal content ([Fe/H]~0.4) and estimated age (t > 8 Gyr), this cluster represents the nearest ideal aggregate to reproduce the evolved stellar population giving rise to the UV-upturn phenomenon in Ellipticals and Spiral bulges. The forthcoming spectroscopic follow-up of this hot stellar sample will assess in deeper detail the real nature of these objects, and their possible link with the UV excess in low-mass metal-rich stellar environments.