How can the answer be improved?
Of course there's more to deciding whether or not a Coach bag or other accessory is counterfeit than just the serial number. You also have to look at the construction details like zipper pulls (but NOT the zipper brand, which can never prove something's genuine!), hardware, stitching, the design and thickness of the straps, the design and font used on the creed stamp or creed patch inside the bag, and especially whether the style number (the numbers to the right of the dash) on the creed actually belongs to that style bag. Also beware of badly-researched or Copied-and-Pasted 'Guides' posted here and at other places on the Net that quote 'Rules' and claim that a certain feature like YKK zippers prove a Coach is real (or fake). Coach has used almost a dozen different brands of zippers, and fakes makers can buy real OR fake YKKs so a zipper doesn't prove a thing). Almost all of them are filled with mistakes, outdated info or just plain nonsense.
Coach Handbag Serial Number A1073-f14663
There is NO single detail that can ever prove a Coach is genuine. And those free downloadable 'guides' you sometimes find are worth exactly what you paid for them - zip, zero, zilch. The ones you have to pay for aren't any better, and the links you sometimes find in them to 'sites where you can buy genuine Coach bags' often lead to sites selling fakes.
Don't waste a dime or your time on them. Please remember, this list is an introduction, NOT a complete list. There are thousands of fakes that won't have any of those numbers, and many fakes, especially newer ones, can have accurate serial numbers. Also remember that no one can say if a bag is genuine just from the serial number! Clear close-up photos of the inside and outside are always needed. Efek aquamarine for canon eos 1100d. A correct serial or style number will never prove that a Coach is genuine, but an INCORRECT number will almost always prove that a bag is fake.