In the past few days, I've looked through my entire STP-related slate of albums, and had forgotten something that I thought I'd ask about on here.
It turns out that I have an Atlantic Records Promo Copy of 12 Bar Blues, that while it features the cover we all know and love, it features a gold stamp on it that proclaims it as being for 'Promotional Use Only'. Also of note, is on the back cover 'Opposite Octave Reaction' is listed as 'Oppopsite Octave Reaction'.
Was wondering if these are rare? Or if any other fans here have a promo copy as well.