This is for another of Wolfgang Puck's restaurant's, Trattoria del Lupo at Mandalay Bay.
This is a 40 strike match cover (extra large) and on the back panel is Spago with the same phone number as your chip:

I have traders of both match covers listed in DropBox:
https://www.dropbox.com/home?preview=NV+MC+Traders.pdf
(please give it time to load, it's a pretty big file)