Austrian Post Office: 1911 commercial cover from Constantinople to Salonica franked with 1 pi Ottoman stamp and cancelled by bilingual "SIRKEDJI/27.5.11". Arrival bilingual with Ottoman PO "SALONIQUE 5/29.5.11", forwarded to France by Austrian PO with added postage of 2x 20 pa. Austrian levant and cancelled by "SALONICH I OSTERR. POST/3"