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With the exception of the 38mm Terracotta dial, link all of the dials are made of brass that has been PVD-treated for the color and then lacquered. The Terracotta dial uses CVD (chemical vapor deposition). Regardless link of the process, the link final effect is a lovely rich color that has a glassy effect while still maintaining the quality and charm of the sunray finish.

It's interesting to me that Longines chose to use one of the most vintage-inspired models in their current catalog to give the ultra-modern carbon treatment. I'm not complaining but if you asked link me I would have put my money link on a carbon Zulu Time making an appearance first. The end result is actually quite striking and the case shape and dial design lend themselves quite nicely to link this treatment.