The Diplomatico rums stem from the work of Don Juancho Nieto Melendez, who researched several different regions and studied their production methods. The result was "Ron Diplomatico," which appears to have first been produced in the 1890s. In the modern day, the rums are offered in several different expression and this is the Diplomatic Reserva Exclusiva rum considers itself an "ron antiguo" or "antique rum" whose rums are aged up to 12 years in bourbon barrels.
The 2012 Beverage Testing Institute--in a comment that will appeal to all the candy-vodka enthusiasts in the marketplace--considered the rum "interesting but a bit too sweet." They repeated the sentiment in 2013 by calling it "flavorful but verging on cloying."
Formerly named Licorerias Unidas, Distelerias Unidas (DUSA) is the major Venezuelan rum producer that has had a number of owners since the 1950s going from Seagram's (now gone), to Diageo, to Pernod Ricard, until local investors purchased the assets of the company in 2002 and established Distelerias Unidas. They take great pride in the unique soil and weather conditions of Venezuela creating "high sucrose" sugar cane.