To check a serial number on a Cartier pen, locate the serial number, which is usually engraved on the pen’s barrel or clip. Compare it with the number listed in the official Cartier database or contact Cartier customer service for verification. Additionally, you can examine the pen's overall craftsmanship and design details, as genuine Cartier pens adhere to high-quality standards. Always ensure you purchase from authorized retailers to avoid counterfeit products.
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