Where should the serial number stamp be inside a Saint Laurent bag?

The stamp that contains a Saint Laurent bag’s serial number is located on a tag on the inside of the bag. It’s sewn into the lining, and is usually near the zipper at the top. Saint Laurent serial numbers have 12 digits separated by a dot. On 1stDibs, you’ll find a collection of expertly-vetted Saint Laurent bags from some of the world’s top sellers.