Brand: Heuer
Model: Chronograph
Reference: 905
Year: 1977
Case: Stainless steel, 40mm
Caliber: Valjoux 7734, manual wound
During the 1970s, fumé dials enjoyed widespread popularity, prompting numerous manufacturers catering to the masses to craft a diverse array of models. Similar to the notably rare Stella dials, these "vignette" dials were fashioned through a comparable process. In the case of vignette dials, they underwent lacquering while positioned on a rotating disk. The dial's perimeter would then be treated with a more substantial layer of the central color or an additional black coating.
It's crucial to differentiate between authentic vignette dials and dials that have naturally faded due to aging. Exposure to radium can lead to a gradient effect from the center outward, influenced by the intense luminescence of the hands. In contrast, a genuine vignette dial was originally designed to feature a deliberate gradient right from the factory. A contemporary example is Panerai, which replicates the gradual radium burn effect in their modern faded dials.
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