Like a few of us, I picked up one of the WG4 w/header shrinks recently and when putting it in storage I noticed a few slight differences to the other copy I have:
1. Slightly bolder type font in the yellow banner "APPROVED FOR USE WITH ADVANCED D&D GAME" of copy 1. Copy 1 on left.
2. Slightly darker shade of the module color in copy 1. Copy 1 on left.
3. The header was not stapled to the module in copy 1 while it was stapled to the header in copy 2. Copy 1 on bottom.
These are the only differences I spotted.
I also have a
B2 with header in shrink that has the header stapled to the module.
I have a theory about which version came first (I think the version without the staples) because I picked up another (third) copy in shrink with the header (matches copy 1) and it was damaged in shipping (thrown in padded envelope without any cardboard backer), in that the header at some point was jammed downward, which caused tears in the shrink. This looks to be very easy to do, and I could see this happening frequently, so TSR decided to staple the headers on to at least prevent this.
I suppose it's possible that the stapled versions were first, and then complaints came in that the modules were "ruined' because of the staple wounds so they got rid of them.
Additional thoughts/theories/observations?