The portraits are of Naser al-Din Shah Qajar, who ruled Persia from 1848 to 1896. In 1873 he visited Vienna. The portraits on the tray are based upon a photograph taken of him in Vienna at that time.
The gorgeous large Vienna style porcelain tray has a deep, dark red ground which is covered with carefully painted gilt vermicelli. Because of all the gilding, it was difficult to get an accurate photo of the color.
It is 14.5" long and 9" wide. The tray is in excellent condition. There are no chips, no cracks, no crazing, and no repairs. It rings when tapped.
The tray is unmarked except for an impressed number 36. On the back it has the distinctive raised cross-bar seen on many Austrian porcelains. I date this tray c. 1873-1880.
NOTE: Modern copies of this porcelain pattern were made in Iran in the mid-50's. The workmanship on those does not hold a candle to this rare and original Austrian piece.