I have no idea which copy I have, but it is on black vinyl, on side 1 it has on the run off S 2321 side 4 S 2324, side 2 S2322, side 3 S2323. I can't be sure whether I bought it in 70 or 71 (memory lapse) I remember getting it from Probe records in Liverpool and it cost £4.00. Unfortunately when one of the music papers printed a centre pages picture of Jimmy Page with his double neck, I meticulously, cut the figure out and stuck it on the back cover. It remains there to this day. But there is definitely a sound which is like a speaker falling over.