Sir Bobby Charlton, Gary Neville, Bryan Robson and Nicky Butt appeared with the Barclays Premier League trophy at a press conference in Santiago to mark the one-year anniversary of United's partnership with Concha y Toro.
The quartet of former Reds then opened a temporary United museum exhibition in the city's Parque Arauco, which is open to the public until 9 October.
The league trophy is on display along with items from the club's 19 title-winning seasons, including the shirts, boots and gloves of Reds stars present and past.
Fans who visit the display will be able to enter a prize draw to win a shirt signed by members of the United first-team squad, with one new shirt being given away each day from 4-9 October.
Jonathan Rigby, the club's head of marketing, said: "United is a global club which strives to be the best in everything we do, so a partnership with CYT was a natural step.
"Both companies are very ambitious, family organisations and it has been a very successful start to a relationship I hope will last for many years to come."