The 1866 Melbourne Cup won by The Barb is the earliest known Melbourne Cup in its original state. First run in 1861, the Melbourne Cup was a cup in name only, with prizes including a gold watch and cash purse.

The first official trophy cup was awarded in 1865. The 1865 trophy was sold by its owner, who reportedly found it unattractive. It was rebranded and presented as the Flemington Hunt Club Cup. The 1866 trophy is therefore the oldest Melbourne Cup in original condition. The National Museum of Australia acquired the 1866 cup in 2012.

Source & Full Story