I've tried that already Carl and they're too similar to tell any difference, except, as you'd expect, the repress / reissue looks cleaner.
I've subsequently been advised by a highly respected dealer to look out for a Bell Sound matrix stamp on the original, albeit very light. I'm assuming that means the repress doesn't have that stamp. Hopefully, I'll get to examine my friend's copy over the weekend to see what he's got, fingers crossed for good news