How do I authenticate a Chanel tweed bag?

To authenticate a Chanel tweed bag, look for a serial number at the bottom of the bag. It should be six to eight digits long and appear in crisp characters. Also, examine the clasp. The Cs in a genuine Chanel clasp have flat edges, not rounded ones. The right-hand C will always overlap the one on the left at the top, with the overlapping reversed at the bottom. On 1stDibs, shop a variety of Chanel bags.