1915 registered cover to Lausanne franked on reverse 2pi. ‘Hamidiye’ tied by Pera date stamp, arrival cds to right. The envelope returned by Hotel with Beau Rivage Palace-Hotel/ OUCHY/Lausanne cachet applied, trilingual green framed ‘Inconnu’ label applied to front tied by Lausanne cds, above straight-line ‘A rendre a l’expediteur’ handstamp and two-line Arabic handstamp; the stamp with one pulled perf.