Qajar Period, Persia.
Date: ca. 1840
Medium: Oil on canvas
Dimensions: Overall: 91.4 x 81.3 cm
Courtesy of the Doris Duke Foundation for Islamic Art, Hawaii, USA
Source: [1]
نقاشی یک شاهزاده - دوران قاجار - موزه شنگری لا - هاوایی - آمریکا
I found this cute looking prince on Doris Duke Foundation's website. What I am guessing is that he is an imaginary portrait of ancient king dressed as a Qajar Prince! Doris Duke Foundation for Islamic Art is located in Hawaii and has some interesting Persian stuff. I highly recommend it. 