When wealthy industrialist Tony Stark (Robert Downey Jr.) is forced to build an armored suit after a life-threatening incident, he ultimately decides to use its technology to fight against evil.
The plaque was used to place over Tony Stark's Arc, in the sequence from when his assistant Pepper Potts (Gwyneth Paltrow) hands him over a gift as a gag joke (his old Arc) which is basicaly his heart. It reads "Proof That Tony Stark Has A Heart". Many were made in different colors , to see what worked best as the font on the original Arc. After they were made production was not happy with, so they used a silver plated plaque to try different styles, this is the final version used.