Nacib K. Djezvedjian

Mavi Boncuk | Taschenuhr Longines,

 Nacib K. Djezvedijan (Nasip Cezveciyan)& Fils Istanbul which was was the authorized dealer and general distributor of Longines watches starting from 1880s, in the Ottoman Empire and until 1960 in Turkey. Djezvedjian, was a well known distributor for high end Swiss watches including Vacheron Constantin. 

The address was Kapali Carsi Mahfazacilar(Muhafazicilar) Sok. No: 44-46 Eminonu/Istanbul at the Kiliccilar Gate of the Covered Bazaar.  

"...The Longines company (founded 1838) constructed a pocket watch for the Ottoman market, showing the both the Turkish time (alla turca) and the European time (alla franca) on the same dial." Science between Europe and Asia: Historical Studies on the Transmission, Adoption and Adaptation of Knowledge Front Cover Feza Günergun, Dhruv Raina Springer Science & Business Media, Dec 9, 2010 ,  279 pages

For the curious: Actor Kenan Pars | real name Kirkor was a Cezveciyan.