Have searched some old thread talking about some guys who sell QC lounge passes.

http://www.flyertalk.com/forum/showthread.php?t=671587
http://www.flyertalk.com/forum/showthread.php?t=681186
http://www.flyertalk.com/forum/showthread.php?t=653559


I know I am taking a big risks if buying them but just want to know how to identify those old passes and new pass? Which is valid and which is not? Any tips from the following items?

http://cgi.ebay.co.uk/4-BUSINESS-CLA...QQcmdZViewItem

Thanks in advance.