
Forum member 'le broodje' recently shared a fascinating discovery about their Breguet Classique Ref. 3137, which Breguet itself confirmed as rose gold despite its yellow gold appearance. This revelation sparked a community discussion on the oxidation of gold alloys, a phenomenon that can significantly alter a watch's aesthetic over time. This article explores the insights shared by collectors on why certain gold watches develop unique patinas, offering valuable context for both new and seasoned enthusiasts.

The reference 3137 represents Breguet's approach to classical watchmaking within the Classique series. This reference features a 36mm case size that positions it as a traditionally proportioned timepiece within the model range.
The watch houses an automatic movement within an 18k yellow gold case measuring 36mm in diameter. The silver dial is protected by sapphire crystal, and the timepiece offers 30 meters of water resistance. The design incorporates a fixed bezel as part of the overall case construction.
This reference appeals to collectors seeking a precious metal automatic timepiece with classical proportions. The 36mm case size and yellow gold construction target those who prefer traditional sizing and materials. The automatic movement and sapphire crystal reflect contemporary technical standards within the Classique series framework.
I swear my RG ALS was looking more YG to me over time…
One of which was a lightly worn Rolex day/date belonging to my wife. It changed in less than a decade and she was very upset. I, on the other hand, felt it looked quite nice as I dislike the Rolex rose or everose or whatever they call it. Other watches that turned yellow-ish were Journe, IWC, JLC, etc.
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