It's authentic, style 92165.
However, that seller has had multiple IDs and a search of her ID on TPF will bring up info. Here's one of several posts about her and her IDs. (Personally, I'd hit the back button.)
http://forum.purseblog.com/coach-shopping/authenticate-this-coach-763164-686.html#post24620642
THANK YOU! I'm gonna stay away then. I can do without the headache....especially since I'm getting burned out on collecting Coach keychains anyway.