1958. Unstamped Official mail envelope addressed to La Montagne, Reunion cancelled by Saint-Denis/Reunion slogan with circular 'Prefecture de Ia Reunion/1st Division’, hand-struck 'T' and boxed instructional 'Parti Sans/Laisser Adresse' with boxed hand-stamp 'lnconnu' and 'Retour/L'Envoyeur' bearing Reunion postage due Yvert 41, 5f on1f orange (pair) applied and tied by La Montagne/Reunion date stamp. Scarce 'C.F.A.' surcharge postage dues on commercial cover. (Tax Method: Margin System) (Image)