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Old 07-22-2011, 10:45 AM   #4
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Join Date: Sep 2002
Posts: 2,158
Default Re: Captain America Easter Eggs Thread *Spoilers*

I'm pretty sure it was because Howard states how it's so rare, the shield is the only amount of it they have. In IM2 Howard states, through video, that he's hidden a special energy source for Tony to figure out how to make because he "was limited by the technology of his day".

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