Editorial
The 49150/422A-9079 is the previous-generation Overseas Chronograph in steel, running Vacheron's in-house Cal. 1141 at 43mm. It occupies a specific position in the market: a genuine manufacture movement, a column-wheel chronograph, and the Overseas name, all at prices that have softened considerably since the current generation arrived. Collectors who want the bones of this watch without paying a premium for a redesigned case will find it a strong choice.
Vacheron introduced this generation of the Overseas Chronograph in the early 2000s, and it ran in steel, rose gold, and two-tone configurations until the complete 2016 redesign that introduced interchangeable straps and updated case proportions. The Cal. 1141 is a column-wheel, horizontal-clutch automatic chronograph built on an ébauche base, delivering solid chronograph execution without flyback capability. The 43mm diameter was a deliberate step up from earlier Overseas pieces and positioned the watch against the Royal Oak Offshore and Nautilus chronographs of the same era.
The ref. 49150 in steel with the 422A-9079 designation points to the blue dial variant, which is the most collected configuration of this generation. Production volume was modest by sports-watch standards, keeping supply tighter than the larger gold references might suggest.
Verify the case is free of deep polishing, particularly along the integrated bracelet lugs and the chamfered surfaces; this case was over-polished by dealers and prior owners with surprising frequency. The bracelet stretch and clasp wear are worth examining in person because replacement bracelet links and clasps for this generation can be slow to source from Vacheron. Confirm both chronograph pushers engage and reset crisply, and check that the column-wheel operation has no hesitation, because any softness there signals wear that requires movement service.
On the dial, look for any moisture intrusion around the subdial rings or the date window, as this generation's gaskets age and the 50m water resistance rating was not conservative. Finally, confirm the reference number on the caseback matches the dial configuration you are buying, since components have been swapped between service donors on the grey market.