Hamilton American Classic Intra-Matic Auto ChronovsLebois & Co Sector Chronograph


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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

American Classic Intra-Matic Auto Chrono

Sector Chronograph
Diameter
40mm
39mm
Lug-to-Lug
n/a
47.4mm
Thickness
14.4mm
13.9mm
lowest
Water Resistance
100m
highest
50m
Power Reserve
60h
60h
MSRP
$2,645
lowest
$4,448
Movement
Hamilton H-31
LC-450
Case
4 specsCrystal & Dial
1 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Hamilton American Classic Intra-Matic Auto Chrono for its attractive panda dial, retro design, and value, with many noting its historical significance and ability to garner compliments. Reviewers and owners alike highlight its clean, athletic aesthetic and vintage charm, with some finding it wears well and fits comfortably under dress shirts, even on smaller wrists. However, multiple sources flag its substantial thickness, ranging from 14.35mm to 14.7mm, and one owner noted the H-31 movement's rotor felt unusually spinny and the date-set button recessed. Accuracy figures vary, with one owner reporting +8 seconds per day and another +3 seconds per day. The included leather strap is frequently described as showing creasing easily or being merely utilitarian, leading some owners to explore aftermarket bracelet options.
The panda dial's contrasting subdials are a notable strength. The bracelet clasp is considered less refined than the rest of the watch.
The Lebois & Co Sector Chronograph Aventurine 324.444 is praised for its exceptional case finishing, with details like matching pushers and a distinct lug-to-bezel step, and its well-proportioned 39mm case that sits nicely on the wrist. Reviewers highlight the striking aventurine dial and the elegant chronograph pushers, alongside the nicely finished manual-wind LC-450 movement. Some owners note the AUD$4500 price tag represents a significant risk for an online purchase. Overall, owners and reviewers rate the Lebois & Co Sector Chronograph Aventurine 324.444 highly for its vintage charm and superior case finishing at its price point.
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