Just recently was gifted a rolled NSS (V3) Blade Runner, purchased from a Canadian source.
Read this entire thread and everything seems consistent with what I observe, including the size (it's actually slightly over 27x41" on both ends), slightly odd paper (hard to describe) and slightly fuzzy text at the bottom. My first impression was "fake."
I contacted the seller and he told me he's sold three of these V3 rolled NSS, all owned since the 80s. Two he sold to another very well known major dealer who has since re-listed/re-sold them. That seller still has one for sale now. So I'm assuming they're real.
Hate to revive something like this this from the dead but found this thread really helped me out over the past two weeks when I've been trying to authenticate this. Thanks to all the authorities like Matt, Bruce, Dave et al who posted here.