This postcard was sent from Constantinople, Turkey on July 8, 1912 and was received at Esmond, Rhode Island on July 20, 1912. The stamp is the 1911 King George V - 1 Penny Carmine issued in 1911, (Great Britain - Scott #154) and is overprinted "LEVANT." (British PO Constantinople - Scott #36). 

The stamp is tied to the card with a circular date stamp (CDS) "British Post Office Constantinople," which was one of the two types of cancellations used by this post office. The other was a "barred oval" with "C" in the center. The British Post Office began operation on September 1, 1857 (Crimean War) and was closed on September 30, 1914 (World War I). It was reestablished on February 4, 1919 and closed for the last time on September 27, 1923.

THE LIGHTHOUSE
The Fenerbahce Lighthouse shown above is located at the entrance to the Bosphorus Straights, which connects the Marmora Sea to the Black Sea. The lighthouse was ordered to be constructed by the Sultan "Suleyman the Magnificent" in 1562. Fener, which is lighthouse in Turkish also lent its name to the Royal Gardens and later the entire neighborhood. The lighthouse served as a prison during the 18th century for political prisoners, a few of whom were executed on the site.