Corrected entry: When Captain America found the shield, he was told it was a one-of-a-kind. However, Tony Stark found it in one of his labs and used it to prop something up in one of the Iron Man movies. How can it be in his lab and also encased in ice?
Xofer
20th Aug 2011
Correction: The shield was one of a kind back in the Forties; it's entirely possible that Stark found his father's design and copied it.
Xofer