I would have to agree with Rockitman I have both the UK and RL, I find the UK a bit quieter that's the only difference.
My LED ZEP 2 pressing anything special
The LP certainly sounds good, and appears as heavy as my Classic records pressing. It's a US first press as per Discogs, cat # SD19127. In the deadwax is: atlantic studios DK, as well as ST A 6916 72 AA. Strangely there is also a large S w/ small R perched inside the top of the S, and a small C in the bottom.