Marathon OSAR-D (Original SAR with Date) Automatic 41mmvsAlsta Nautoscaph

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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.

Marathon OSAR-D (Original SAR with Date) Automatic 41mm at true scale

OSAR-D (Original SAR with Date) Automatic 41mm

Alsta Nautoscaph at true scale

Nautoscaph

Diameter

41mm

40mm

Lug-to-Lug

43.5mm

lowest

51.3mm

Thickness

13mm

lowest

16.2mm

Water Resistance

300m

300m

Power Reserve

n/a

41h

MSRP

$1,800

$695

lowest

Movement

Sellita SW220-1

Seiko NH35

Case

5 specs
Diameter
41mm
40mm
Thickness
13mm
16.2mm
Lug-to-Lug
43.5mm
51.3mm
Lug Width
18mm
n/a
Material
316L Stainless Steel
Bronze

Crystal & Dial

1 specs
Dial Color
Black
n/a

Movement

2 specs
Caliber
Sellita SW220-1
Seiko NH35
Power Reserve
0h
41h

Pricing

1 specs
MSRP
$1,800
$695
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Reviews

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

Marathon OSAR-D (Original SAR with Date) Automatic 41mm

The Marathon OSAR-D (Original SAR with Date) Automatic 41mm is noted for its high legibility, featuring large hour markers and a white dial with applied indices. A functional date magnifier is present. The watch utilizes a reliable Sellita SW200-1 automatic movement. One reviewer found the bracelet lacked refinement and preferred the rubber strap option. On balance, reviewers highlight the Marathon OSAR-D (Original SAR with Date) Automatic 41mm's strong legibility and functional design as its primary strengths.

Alsta Nautoscaph

Owners widely praise the Alsta Nautoscaph for its vintage-inspired design, cinematic appearances in films like "Jaws" and "Fear and Loathing in Las Vegas," and its "70s cool" aesthetic. Reviewers note its contrasting case finishes and functional, lumed dial, though the absence of a lumed numeral at 3 o'clock due to the date window is a minor drawback. One reviewer flags the watch's 15.1mm thickness and poor bracelet execution as significant issues, deeming it a "colossal failure" at its price point, while another owner suggests it is egregiously overpriced at MSRP but a fun summer piece in the $500-600 range. On balance, owners and reviewers are divided on the Alsta Nautoscaph's value and wearability, with its aesthetic appeal and cinematic provenance being its strongest selling points.

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