Each and every TAG Heuer watch is issued with a serial number. This number is engraved on the back of your timepiece's case, often beneath the TAG logo.

My view: It has become increasingly popular to hate on Tag because it's considered a lifestyle brand that has gone back to its heritage roots too often to gain credibility. Horologists usually associate Tag with people who want a nice watch but know nothing about watches.

While not all TAG Heuer watches hold their value, as well as some luxury counterparts, the brand's iconic models and vintage pieces have demonstrated stronger value retention. The Monaco, Carrera, and Autavia stand out as examples of watches that generally hold their value better within the TAG Heuer lineup.