[also cross-posted to visa/mastercard forum]
a citibank gold card from certain markets grants access to northwest worldrooms upon presentation of the card regardless of airline/class travelling that day.
e.g.
philippines:
http://www.citibank.com/philippines/...p/trcomfrt.htm
thailand:
http://www.citibank.com/thailand/cd_det.htm#WorldClub
the question is whether a citibank gold card issued from another market, say, australia or malaysia, would allow lounge access as well since the cards don't actually differ physically from market to market.