Coach bags zipper not only YKK

I've been reading the guides in regards to fake coach bags. I agree on some of the helpful hints. In regards to the zipper it has to say YKK on it, it wasn't explain if you buy itat Coachor Coach Factory stores.I usually bought my Coach Bags at the Coach factory stores andI notice that the zipper has IDEAL on it. I have the Coach Applique Tote that does not have the YKK or IDEAL but the pull has a round Coach emboss on it.