I don't think this has ever been mentioned here, apologies if it already has and is common knowledge, (I can't seem to find any reference to it), but Initium British Steel's are in Ironman 3!!

- It totally went under my radar!!
I've turned up the brightness on the 2 images a bit, as the scene is quite dark.
They look like they have the same custom very light brown gradient lenses as in IM2, so with an educated guess, they are the actual same pair of "striated" frames used in IM2.

I initially thought that they were the tortoise, but on the screencaps, they do look "striated" on the right hand side of the frame (his left). The almost slight red appearance, is probably just the color of the scene background coming through the frame.
I suppose if they were tortoise, there would be lots more "light amber" areas that would be visible on the entire frame. The tortoise pattern would also be random, but the pattern is "horizontal" (and on the nose bridge too) and is too dark to be light amber.
This would also reaffirm Wolfshire's excellent theory (p.173) that it is indeed, the striated frame in the IM2 deleted scene.
I'm going to add them to my official movie frame list for IM3.
Jason should add these to his Initium website under the Iron Man 3 section, as it's his frame with screentime in an MCU scene.
What do you guys think??