- 1). Locate the Prada authenticity cards or certificates that came with the merchandise. Any authorized retailer has these cards for Prada products. Many people selling an older product second-hand still have these items, as well. Genuine authenticity cards have Prada's name engraved on them, and are not just printed.
- 2). Read your authenticity cards. The plastic card lists a model number on the back. The black paper card lists the same information as the plastic one, in addition to a serial number with a bar code. Depending on the product, it may have two bar codes with serial numbers.
- 3). Call an authorized retailer, like Saks or Neiman Marcus, to have them check the model number. You can also email client service at Prada directly and ask them about the model number or the serial number. They can provide you with the information about whether the serial number is legitimate or not.
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