Albert, If you're looking for a response on the Irish edition why not put your comment on the page where that entry is.
I'm sure whoever posted the sleeve would be more than glad to explain certain aspects of the Irish record Industry?
In Europe and in the Americas various combinations of record pressed in one country for another country or to be placed in a label from another country or labels supplied from one country for over printing in another. Standard industry practice from the eighties onward.
What are the slight differences you note on the Irish front cover?
My UK pressing with injection moulded labels has a sleeve identical to the one listed as 'Ireland EMI 5540', its got the extra bubbles on the back cover, oh and the front cover is very slightly different too if you look close enough (the lettering offset). Is the 'Ireland' pressing not just a regular UK (non-gatefold) sleeve.