[en] The two very neutron-deficient isotopes of lead A=190, 192 have been produced and studied through the reaction ¹⁵⁶Gd-¹⁵⁴Gd(⁴⁰Ar,4nγ)¹⁹²Pb-¹⁹⁰Pb. The identification of those nuclei was also studied by means of the two additional reactions: ¹⁸²W(¹⁶O,6nγ)¹⁹²Pb and ¹⁵⁶Gd(⁴⁰Ar,6nγ)¹⁹⁰Pb. The pulsed ⁴⁰Ar beam available at ALICE (Orsay) enabled to record single γ spectra as well as four dimensional (energy-time) spectra corresponding to the correlation of two Ge(Li) detectors for different time windows. Tentative level-schemes are proposed. No significant deviation from the behavior previously reported for the heavier isotopes (ref.1) is pointed out. The data are consistently reproduced within a 2 q.p formalism using an S.D.I. residual interaction. However a slow decrease of the 2₁⁺ level energy is observed which could be an indication of a weakly increasing collective trend when the number of neutron holes increases. Those experimental conclusions fairly agree with the theoretical predictions by F.Dickman and K.Dietrich (ref.2). As a matter of fact, the authors predict a spherical shape for the ground states and find a secondary prolate minimum of the deformation potential at low energy. But the latter is not well developped for A>184 suggesting a spherical behavior for the heavier isotopes