Just found this...not mine...I'm still waiting for these chips & the $5 chips to be out in general circulation.
I have not seen any on any tables in 3 weeks.

http://cgi.ebay.com/Mohegan-Sun-10th-Anniv-100-00-chip-HTF_W0QQitemZ300053327826QQihZ020QQcategoryZ63755QQssPageNameZWDVWQQrdZ1QQcmdZViewItem