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  1. Visit our service store, choose the service you want, and place your order.
  2. Note down or screenshot your order number.
  3. Submit your order number and pictures of your item to our Facebook Page (
  4. We will reply whether the item is authentic or counterfeit within 24 hours. If PDF file is purchased, it will be sent to your e-mail.

Sample Certificate of Authenticity

Sample Letter of Inauthenticity

Sample Detailed Dispute Letter

Photo Guide (Louis Vuitton)

BottomBrand StampDate Code
InteriorZipper PullHardware Engraving

Photo Guide (Chanel)

BottomBrand StampSerial Number
InteriorZipper PullButton
Hardware EngravingLogoCard

Photo Guide (Hermès)

Brand StampBuckleCode Stamp
Zipper PullZipper StopperPadlock

Photo Guide (Gucci)

HardwareBrand StampCode Stamp
InteriorData Matrix (Left)Data Matrix (Right)


Master Authentication is an independent authentication service that renders opinions on the authenticity of luxury handbags and accessories and is not affiliated with or sponsored by or certified by any brand. The opinions rendered by Master Authentication are personal opinions which are based on our knowledge of luxury handbags and accessories from over 40 years of experience. We make every effort to ensure that our opinions are accurate. Clients agree to release Master Authentication from any liability whatsoever and to defend, indemnify and hold Master Authentication harmless from and against any loss, damage or claim, arising out of, based upon or resulting from any opinion rendered by us with respect to luxury handbags and accessories.