when BIL gave me a photo billfold for Christmas that was Kate Spade. SIL (other BIL's wife) was ecstatic and freaking out and explained. Since then we've been to the Kate Spade outlet (across the parking lot from the Coach Outlet) and i like her bags better.
Coach bags have the word "COACH" on them, and sometimes a buch of interlocking "C"'s.
The "horseshoe" is the "A" from Etienne Aigner. I wonder what poor Mr Etienne did to be left out of the logo?! LOL! (unless it's the first name? i'm not designer savvy enough to know that much detail!)