Catalogue number is JE 36496, on the left-hand side of both labels, and it should be on the spine too; AL 36496 and BL 36496 are the side matrix numbers on the right-hand side of each label, there are no "mono" catalogue numbers shown, and there wouldn't have been for a new recording released in 1980.
The labels have both the stereo and mono catalogue #'s. i cannot find any catalogue # on the covers. I do not see "stereo" on the front or rear cover. I assume this means mono. A mod. can correct if my assumption is incorrect. Thanks!