Be very careful when buying a Coach handbag.  Check out what the handbag is suppose to look like on coach.com, then carefully look over the handbag you are looking to bid on. Look at the fabrics, stitching, and colors. 

If the handbag you are looking to bid on doesn't closely match the handbag on coach.com, then ask the seller questions.  Ask questions like, does it come with the Official Coach dust bag and registartion papers. 

A lot of sellers will copy the picture of the handbag off of coach.com, if you have a seller that has copied the picture off of coach.com, then ask them if they have pictures of the actually handbag that they are selling. 

Always ask for pictures of the front & back of the purse as well, as the inside of the purse and the coach creed and serial number located inside the handbag.  If they say that they can't provide them, it is usally a fake Coach handbag.

Also, if the handbags does come with a dust bag, make sure it is the Official Coach dust bag.  Coach dust bags are brown with the coach creed on the front of the bag.  The white dust bag is normally for a wallet or wrislet. 

The sellers that are the safest are the ones that sell Coach products everyday.  Look at their Feedbacks and read what the buyers are writing about them.

Sellers that sell alot of Coach Products will normally say "Guaranteed 100% Authentic or your money back"  These people are the safest to buy from.  When you win an auction make sure to always print out a copy of the listing for your records in case something is wrong with the handbag.

Make sure you do your homework, before you bid.  You don't want to pay a lot of money for a fake.  Always better to be safe then sorry.

If you expect a handbag to be fake then report it to the ebay safety and trust at the following link:

http://pages.ebay.com/help/contact_us/_base/Counterfeit_handbags.html#

I hope this guide helps you with making the right decision on buying a Authentic Coach Handbag.