probably not, since that scene was probably going to be used at the time they did hulk. When they were hoping to have cap started sooner then it is now. As for the scene with coulson and stark with the shield. i dont think stark doesnt know what it is. Since its been stated to us that stark sr, was invovled with ww2 stuff and tony knows about it and all that. And i still say it was probably just a prototype shield had to be the one he was working on from the first film, and it maybe was a shield made after the original was lost with steve when they were probably trying to recreate cap's shield.