This Captain America LEGO Exclusive Minifigure was available for the lucky few who attended the New York Toy Fair in 2012. This minifigure was given away as a promotional Marvel Super Heroes set that also included an Iron Man LEGO Exclusive Minifigure.
Captain American comes with a shield and the main differences to the standard Captain America Minifigure is the design on his torso and back print which includes a brown utility belt and his legs and arms are a different colour.
Let us know if you managed to get hold of one of these Marvel Super Heroes exclusive minifigures!