I can't remember who it was against but what I do remember was hardly being able to see a thing.
Went with my cousin's older brother (also my cousin funnily enough) and his mate.
In the Bob Bank towards the back and they put me on their shoulders every so often.

Toshack was playing and there was talk of him looking to be transferred so I would guess it must have been 69/70 season.

It was about another 3 or 4 years before I went down more regularly, although we waited for h/t or just before if we couldn't sneak in as they used to open the exit gates.