I get the whole it came from the Lucasfilm archive and all but really, it's a brown paper envelope.
http://www.ebay.com/itm/Star-Wars-Vintage-Kenner-Unused-Mailer-for-the-62-Coin-Set-Lucasfilm-Archive-/201530618299?hash=item2eec2931bb:g:xI8AAOSwll1W0KvX
http://www.ebay.com/itm/Star-Wars-Vintage-Kenner-Unused-Mailer-for-the-62-Coin-Set-Lucasfilm-Archive-/201530618299?hash=item2eec2931bb:g:xI8AAOSwll1W0KvX