Well that's just dandy... now which one is the typo? I've listened to the LP through the Tate and it decodes very well, but that doesn't mean it isn't a QS release. The "music" is pretty out there... it would be pretty hard to determine if it is QS or SQ just from listening to it.
However, I don't think I've ever seen a QS release that didn't have the Sansui QS logo, unless it was called something else (RM, Command, Compatible, whatever) so I am inclined to believe the original issue is correct (SQ) and that the reissue is just a typo (QS).
But then, I'm just guessing...