A yellow sticker on the sleeve gives information about the remixes and the catalogue number.

There are at least two slightly different, alternative, versions of the sticker. Check the photos
Matrix / Runout: 74321 - 131 271 A SST (Side A, etched)
Matrix / Runout: 74321 - 13 12 71 B SST (Side B, etched)
Matrix / Runout: 74 321 13 12 81 A SST (Side C, etched)
Matrix / Runout: 74321 131281 B SST (Side D, etched)