It must have been from a less than ideal video source then - something they found in 'the vaults' - rather than freshly minted for the GOUT release...
Anyway I digress - it's just always bugged me and I'd never seen it mentioned before. At least I know now my eyes aren't deceiving me ;)
I bet it looks fab, and that bit sharper when actually moving unlike a screen capture.
This is the kind of fan restoration I bought my video projector for ;)