Elevate your style with this stunning CHANEL Medium Classic Double Flap Black Quilted Caviar Hand Bag. This vintage piece features a rectangle shape with a turn lock closure and gold hardware. The bag is made of high-quality lambskin leather in black, and the interior is lined with leather, adorned with inner pockets to keep your essentials organized. The chain strap can be adjusted to a drop length of 9.5 inches to 17 inches, making it perfect for a crossbody or shoulder bag. This CHANEL Classic Double Flap is not only gorgeous but also comes with a certificate of authenticity. Whether you're shopping or running errands, this bag will add a touch of class to your outfit.

I did find a website with a conversion table for the date code. So by that the date of the handbag is 1997 to 1999, see below.  The certificate of authenticity code 5163379 on the card directly correlates with the date code sewn in the bottom of the bag.

5XXXXXX 1997 to 1999 0's have strikethroughs up to 51XXXXX. 0's have no strikethroughs from 52XXXXX to 56XXXXX. 0's have strikethroughs from 57XXXXX on. 1's have small serifs (feet) from 57XXXXX on. Seven digit serial number printed on white sticker covered with clear tape with two Chanel logos from 57XXXXX on."X" cut-lines prevent sticker from being removed without damage. "CHANEL" appears on the right side of the sticker. Dark line appears on left side of sticker. Gold speckles appear throughout sticker.