Bolometric vs. BH mass for the normal Sy2 (red symbols) in the unobscured Sy2 (blue symbols). All the unobscured Sy2 are found in the same region as the potential True Sy2 (i.e. in the region between Λ_max, black line and Λ_min, grey line). Λ_max and Λ_min represent the limit for the existence of the BLR: below the minimal value we can be sure it is a True Sy2, AGN with an intrinsic BLR (even if not directly observed) are found above the maximal value, while between the two they can be either True Sy2 or a BEL emitters.