Check out some images of new Film Cells for The Avengers movies.
And yes, you do see Captain America wearing his mask and Iron Man sporting his helmet!
These come from FilmCellsLtd, where they have a few more Avengers related products and images up as well.
These contain actual clips of film, along with an image, and are set on a descriptive plaque that comes with a certificate of authenticity.
The Avengers assembles May 4th, 2012 and is directed by Joss Whedon, starring Robert Downey Jr. as Iron Man, Chris Hemsworth as Thor, Chris Evans as Captain America, Samuel L. Jackson as Nick Fury, Mark Ruffalo as the Hulk, Scarlett Johansson as the Black Widow and Jeremy Renner as Hawkeye.
Head on over to the Cosmic Book News The Avengers Movie Hub for more news, images and trailers.