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.

Hamilton American Classic Intra-Matic Chronograph H at true scale

American Classic Intra-Matic Chronograph H

RGM Watches Model 455 Classic Chronographs at true scale

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 specs
Diameter
40mm
38.2mm
Thickness
14.35mm
13.9mm
Lug-to-Lug
49mm
n/a
Water Resistance
100m
50m

Crystal & Dial

1 specs
Dial Color
White
n/a

Movement

3 specs
Caliber
Hamilton H-51
Valjoux 7750
Type
Manual
Automatic
Power Reserve
60h
0h

Pricing

1 specs
MSRP
$2,495
$7,950
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Hamilton American Classic Intra-Matic Chronograph H

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.

RGM Watches Model 455 Classic Chronographs

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.