The date was 24th November 1971 and it was the 1st leg (round 3) of the UEFA Cup tie against AC Milan at their San Siro Stadium. Although we were beaten here 3-0 on the night, we did win 2-0 in the 2nd leg at Dens a fortnight later, which I remember being at.
The picture above shows Bobby Wilson in the air, with Ian Phillip looking on and that's Jocky Scott in the distance. The photo captures the build up to Milans 1st goal. Prati heading the ball into the path of captain Rivera, in the armband, who then goes on to thump it home.