Black hole mass vs. bolometric luminosity diagram. The dotted lines correspond to different Eddington ratios. Theoretical upper limits of True-Sy2s predicted by different authors are also marked: Nicastro (2000, N00) (dot-dashed line), Laor (2003, L03) (short-dashed line) and Trump et al. (2011, T11) (long-dashed line). The location of IRAS 01072+4954 is compared with other sources from the literature. Sy1 and Sy2 from Singh et al. (2011) are symbolized as filled-red and empty-blue stars, respectively; IMBH compiled by Dewangan et al. (2008) and by Greene & Ho (2007a) are solid and empty orange triangles; True-Sy2 candidates of Laor (2003) and low-M_BH Sy2s from Thornton et al. (2009) are filled and empty green circles, respectively. NLSy1s with FWHM_broad,Hα ≤ 700   km   s^-1 from the sample of Zhou et al. (2006) are plotted with empty magenta squares. Other well-known NLSy1s: NGC 4395, NGC 4051, and SDSS J114008.71+030711.4 indicated as “G08”, and the dwarf-elliptical Sy1 POX 52 are marked with filled magenta squares.