An Upper East Side duplex that was formerly owned by the late Argentine oil and gas mogul Carlos Bulgheroni is on the market for $2.75 million.

At the time of his death in 2016 at age 71, he was his home country’s richest man; he and his brother Alejandro were worth a combined $4.8 billion.

An executive at Bridas Corporation, Bulgheroni made his fortune dealing with regimes and organizations from the Taliban to authoritarian states in North Africa, Russia, Central Asia and the Middle East.

The two-bedroom unit is at 3 E. 69th Street.

The listing brokers are Douglas Elliman’s Stephen Dartley and Cynthia Jacinta Keskinkaya.