1920 - 1939, unused / mint never hinged and (predominantly) cancelled specialized collection, as well numerous good issues right up to Michel no. 18 / 33, 31 Iy PF Ia, 40 Iy, 164 / 66, 167 / 73 and I / IV S6 mint never hinged, as well colour shades, overprint error and -types and so on, very many expertized BPP, extensive and interesting collection mounted on pages