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Movement tier: unclassified · caliber Chronoswiss Cal. C.126 -- restored 1990s Chronoswiss legacy automatic, 21,600bph, 35h PR, 42j, 28mm movement diameter; quarter (hours-and-quarter-hours) repeater on two gongs, Glucydur balance wheel, Nivarox hairspring, Incabloc shock protection, openworked rotor decorated with Cotes de Geneve
Medium-large: suits wrists 6.5 in+ (16.5 cm+)
42 mm case. Wears confidently on average to larger wrists. May overhang on slender builds.
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A 25-piece revival of Chronoswiss's own 1990s minute-repeater caliber. Counterfeiting risk is essentially nil given the tiny production run; the things worth checking are the chime quality itself and whether the movement's "restored vintage caliber" story is being accurately represented rather than oversold as an all-new in-house repeater.
Known issues in the market
The C.126 is a restored and refinished 1990s Chronoswiss caliber, not a newly engineered movement; a description implying an entirely new in-house repeater caliber overstates the movement's actual history.
This is a quarter repeater: it chimes the hours and quarter-hours on two gongs via a pusher at 10 o'clock. It does not chime individual minutes, which would require a more complex (and differently named) minute-repeater mechanism.
Two colorways exist, each limited to 25 pieces: Scream (blue, orange, and purple CVD-coated bridges with a Paraiba-green minutes ring) and Blue Note (navy CVD-coated bridges). A dial combining elements of both, or colors outside this pair, does not match either documented configuration.
Area
What to check
What is correct
Red flag
movement
Quarter-repeater chime activation
Pusher at 10 o'clock activates a clear two-gong chime sequence for the hours and then the quarter-hours, with visibly moving hammers at 1 o'clock
Muffled, incomplete, or single-gong chime; hammers that do not visibly move when the pusher is activated
42mm Grade 5 titanium case with double bands of knurling top and bottom, an onion crown, and a glassbox sapphire crystal that visibly distorts the dial periphery
A flat (non-glassbox) crystal, or knurling and crown details inconsistent with official photos
dial
Skeletonized regulator-style layout
Central minutes hand, hours subdial at 12 o'clock, and small-seconds subdial at 6 o'clock, with ceramic Super-LumiNova blocks on the minutes ring
A conventional three-hand layout sharing a single center point, inconsistent with the regulator display this reference is built around
Common legitimate replacements
Strap only (grey nubuck leather with Alcantara lining); no bracelet option exists for this reference.
Expert resources: Monochrome Watches' full technical write-up documents the restored C.126 caliber and dial construction in detail for comparison; each piece is individually numbered out of 25.
