There were two pressings of this, one was Direct Metal Mastered, the other was not. The Metal Master version is slightly different, and is indicated by the DMM logo on the top left corner of the rear sleeve.
Etchings are as follows:
Side 1:
Non-DMM Version: 08 24661 20 1A1 LAY 15
DMM version: LAY 15 - A1 - C
Side 2:
Non-DMM Version: 08 24661 20 1B1 LAY 15
DMM version: LAY15 - BA - C