From Stamps of the World
Iași is the largest city (290,422 inhabitants in 2011) in eastern Romania and the seat of Iași County. Located in the historical region of Moldavia, Iași has traditionally been one of the leading centres of Romanian social, cultural, academic and artistic life. The city was the capital of the Principality of Moldavia from 1564 to 1859, then of the United Principalities from 1859 to 1862, and the capital of Romania from 1916 to 1918.
Principality of Romania (1862-1881)
Principality of Moldavia 1858
Austrian Levant Post Office (1785 - 1869)
An Austrian post office operated since 1785 until 31 March 1869.