Hamilton American Classic Intra-Matic Chronograph HvsRGM Watches Model 455 Classic Chronographs

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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 Chronograph H

Model 455 Classic Chronographs
Diameter
40mm
38.2mm
Lug-to-Lug
49mm
n/a
Thickness
14.3mm
13.9mm
lowest
Water Resistance
100m
highest
50m
Power Reserve
60h
n/a
MSRP
$2,495
lowest
$7,950
Movement
Hamilton H-51
Valjoux 7750
Case
4 specsCrystal & Dial
1 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners and reviewers widely praise the Hamilton American Classic Intra-Matic Chronograph H for its attractive vintage-inspired design, clean dial, and satisfying manual-wind H-51 movement. The 40mm case size is frequently highlighted as a positive, contributing to comfortable wearability. Some owners note the watch consistently receives compliments and appreciate its historical significance and value. The watch's timekeeping is generally good, with one reviewer noting +3 seconds per day and a 60-hour power reserve. However, the 14.35mm thickness is noted by several sources as being on the thicker side for a hand-wound chronograph, though it is still considered to wear well. One owner found the date setting unusual and the rotor audible. There is also a mention of some owners wishing for a three-subdial version and criticism of the OEM strap being utilitarian.
Owners widely praise RGM watches for their American craftsmanship and special, unusual designs, with one owner finding the tele and tachy scales brilliantly done and perfectly colored. The 38.2mm case size contributes to a diminutive appearance for some, while others find the brand's designs mesmerizing and aspirational. Owners report that RGM watches wear well and garner compliments, with watch experts recognizing the brand's quality. On balance, owners and reviewers rate RGM Watches Model 455 Classic Chronographs highly for its unique American craftsmanship and vintage-inspired dial details.
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