How do I authenticate a Chanel brooch?

You can authenticate a Chanel brooch by checking the back for a little oval stamp or embossed mark. It should be noted that some of the oldest jewelry pieces were not marked, but these pieces are extremely rare and do not often come up for sale. Most of the Chanel jewelry and brooches you will find are from the 1980s or later and will include an oval tag, plate, or stamp. Shop expertly vetted Chanel jewelry from some of the world’s top reputable boutiques on 1stDibs.