Hamilton American Classic Intra-Matic Auto ChronovsBaltic Scalegraph Classic

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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 Auto Chrono at true scale

American Classic Intra-Matic Auto Chrono

Baltic Scalegraph Classic at true scale

Scalegraph Classic

Diameter

40mm

39.5mm

Lug-to-Lug

n/a

47mm

Thickness

14.4mm

13.5mm

lowest

Water Resistance

100m

highest

50m

Power Reserve

60h

63h

highest

MSRP

$2,645

$1,712

lowest

Movement

Hamilton H-31

Sellita SW510

Case

4 specs
Diameter
40mm
39.5mm
Thickness
14.45mm
13.5mm
Lug-to-Lug
n/a
47mm
Water Resistance
100m
50m

Crystal & Dial

3 specs
AR Coating
n/a
Yes
Dial Color
White
Panda
Lume
None
BGW9

Movement

3 specs
Caliber
Hamilton H-31
Sellita SW510
Type
Automatic
Manual
Power Reserve
60h
63h

Pricing

1 specs
MSRP
$2,645
$1,712
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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 Auto Chrono

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.

From video reviewers

The panda dial's contrasting subdials are a notable strength. The bracelet clasp is considered less refined than the rest of the watch.

Baltic Scalegraph Classic

Owners widely praise the Baltic Scalegraph Classic for its excellent value, well-devised dial layout, legible contrast, and vintage aesthetic, with some finding its finishing equal to or better than more expensive brands. The 39.5mm case size is a positive point for many. However, some owners report issues with quality control, including misaligned bezel markers and moisture ingress leading to returns, with one owner finding the watches light and "toylike" with unrefined finishing. The manual-winding Sellita SW510 movement is noted. Overall, owners and reviewers rate the Baltic Scalegraph Classic highly for its vintage aesthetic and strong value proposition, despite some quality control concerns.

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