
Mavi Boncuk | From Josef S. Ventura[1] in Vieena to Mordehai S. Cohen at (Omer) Abid Han [3]in Galata, the location of the first Ottoman Stock Exchange.[4]
[1] Ventura was a family of rabbis and scholars prominent in Italy and Greece in the sixteenth, seventeenth, and eighteenth centuries.
[2] Gottfried Schenker founded Schenker & Co. in Vienna, Austria, in 1872 as a transportation company and is now a logistics subsidiary of Deutsche Bahn, the German railway company.

[4] Ottoman Central Bank (originally established as the Bank-ı Osmanî in 1856, and later reorganized as the Bank-ı Osmanî-i Şahane in 1863) and the Ottoman Stock Exchange (Dersaadet Tahvilat Borsası, established in 1866)