Silk Moth ID --- specimen (1 Viewer)

[Bokmakierie99]

I was recently given this: http://www.birdforum.net/gallery/showphoto.php/photo/510281/limit/recent by someone who knows I'm into moths. Any help IDing it would be appreciated.
Thanks!

 

[tjsimonsen]

I am leaning towards a very faded Attacus atlas.

Thomas

 

[Bokmakierie99]

looking at photos from the internet, that does seem like a pretty good match. Does the Atlas Moth have any similar species?
I would estimate that from tip to tip, the up/down length of one wing is about 5 1/2 inches. But that could be off since I can't open the case.