I know for a fact Gigabyte G1 have a plastic film on the fan cover like you mention. So at somepoint that card has being used. Send it back to us or wherever you got it from.
Drop a post in CS forum and link them to my reply here if it is from us as I know for a fact Gigabyte cards have the film on fan shroud.
My card I got from Gigabyte was brand new and even though the box/static bag was not sealed the fan cover did have a plastic film.
Your static bag also looks like it had a fight with Mike Tyson, looks used for sure.
OK I will drop a post in the CS forum then, thanks for confirming that information Gibbo.