Complications
Hmmmcamu presents the Seiko Caliber 6138, a pioneering integrated chronograph movement from the 1970s, paired with its original Stelux President bracelet. The author highlights its advanced features like the column wheel, vertical clutch, manual winding, and quick-set day/date, positioning it as a significant evolution in chronograph technology. This post delves into the technical innovations that made the 6138 a notable movement in horological history.
The Seiko 6139 is an automatic chronograph movement introduced in the late 1960s, notable for its integrated column wheel and vertical clutch. The 6139-600X series, particularly those with yellow or blue dials, gained the "Pogue" moniker due to its association with Colonel William Pogue. These watches were produced by Seiko's Suwa factory, featuring specific dial markings that distinguish variations within the series.
A watch very advanced for its time.
Would be Grand, if Seiko came up with something similarly revolutionary in chronographs again 🤞🏻
To be clear, Rolex never used the 7750 in their Daytonas. They used their modified version of the Valjoux 72. The 7750 was used in some Tudor chronographs, but never Rolex. Also, the 6138's are amazing watches! I own this exact model, and another version ("the Jumbo") as well.
which is full of character. Best, Emmanuel
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