How can you tell if a TAG watch is real?

To tell if a TAG watch is real, first check the serial number, usually found on the back of the case. The Swiss luxury watchmaker offers a serial number warranty checker tool on its website that you can use to determine if the serial number is authentic. Next, examine the glass on the watch face. Genuine TAG Heuer watches feature highly scratch-resistant sapphire glass, so if you notice any fine scratches, the watch is likely a fake. You can also test the glass by placing a few drops of water on it. On an authentic TAG Heuer, you'd expect the water to form an evenly shaped pool due to the properties of the glass. If the water runs or smears, the watch could be a reproduction. Next, double-check that all logos match the official TAG Heuer branding. Finally, turn the crown. If it doesn't move smoothly or feels loose and unsecure, the watch could be a replica. When in doubt, a certified appraiser or other knowledgeable expert can inspect your timepiece to authenticate it. On 1stDibs, find a wide range of TAG Heuer watches.