Anyone who’s ever bought or contemplated buying a secondhand Rolex watch, here’s some food for thought: If you had purchased ...

In the world of luxury watches, Rolex GMT models like the 126710BLNR “Batman” and 126710BLRO “Pepsi” have long been holiday favorites, and this year they continue to attract attention.

Rolex introduced the Batman GMT in 2013. The Pepsi’s 4.1% gain in a year contrasts with a 5.7% loss for an index of Rolex watch prices compiled by Subdial.

Which Rolex models are more expensive now? Perhaps the most interesting part of this is looking at which Rolex models are being given the biggest price increases. Popular models like the 'Batman ...