Hello Ian,
From what I can tell, it was bought and then discarded by the govt. It does sound like the same stuff, Rapitone M-1, Variable Contrast Glossy...I did wonder if it was fine for normal use as I know that there were other Agfa papers out there like Brovira. I found some of that too but its at least ten years old (at least this particular box) and I'm not sure that it still prints like it once did. Or at all. So sorry for the question, but expired papers, if stored properly, are still usable, right? Thanks!