Borussia Moenchengladbach vs Rangers 73-4 ECWC

[Auchinleckian]

I know the 80's games of Scottish clubs at BMG are very easy to pick up, but picked this particular issue up for the princely sum of £1 today at the local car boot sale. Haven't seen it before, which is hopefully indicative of it being fairly collectable. It's a 2nd round European Cup Winner's Cup tie, and is the usual large BMG style. Anyone any ideas?
Added bonus, though please don't take this into account of any valuation is that the back page is signed by 4 of the Rangers players.