"PR" (180°rotated) in label matrix denotes a [l130920] pressing.

First Pressing (1978): Mostly brown cover with the words "Double Vision" below the band photo at bottom of the cover.
Second Pressing (1978): Blue tint to photo and "Double Vision" below the band name which is blue. Has "<3 Pogo" scratched into the inner circle wax.
Third Pressing (1979): Purple tint to photo and "Double Vision" below the band name which is purple.

Mastered at Sterling Sound
℗©1978 Atlantic Recording Corporation.

Runouts are etched - (PR)P is 180°rotated, except 'STERLING' is stamped.
On side A of variant #6 the 784097 etched number is overridden by the correct numbers it looks as if it was originally written as 748097.  Looks like someone transposed the 8 and the 4 originally.  This is not really a scratch out.
On side B of variant #6 the 784098 etched number is overridden by the correct numbers it looks as if it was originally written as S84097, or possibly 884097 but was corrected. This is not really a scratch out.