Examine And Verify TAG Heuer Serial Number Each TAG Heuer watch has an exclusive serial number, making this one of the most significant ways to verify authenticity. You may see the TAG Heuer serial number on the caseback. It should be engraved on the edge of the crystal for models with a transparent caseback.

It is worth noting that while some TAG Heuer watches may experience depreciation in value, others exhibit a stronger hold. Vintage Heuer models, particularly those from the 1960s and 1970s, have benefitted from an upward trajectory in value appreciation due to their historical significance and collector appeal.

First, bring the strong magnet next to your gold piece and wait for the reaction. Gold is a non-magnetic metal and if you see no reaction, then it means it's the real gold. Otherwise, if you see the attraction, you're having fake gold. Gold-plated metals also tend to be non-reactive in this case.

The bottom number is your timepiece's unique serial number, while the top is the model reference, which is identical for each watch of the model type. What do the serial and model numbers mean? The two numbers on the back of your TAG Heuer watch have different purposes.