Borealis Watch Co. Porto CovovsHelicon Siebe Gorman Type D Professional Diver

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Porto Covo
Borealis Watch Co.Porto Covo

MSRP $350

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Siebe Gorman Type D Professional Diver
HeliconSiebe Gorman Type D Professional Diver

Ref. siebe-gorman-type-d-professional-diver-abyss-blue-limited-edition-vip-pre-order·MSRP $746

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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.

Borealis Watch Co. Porto Covo at true scale

Porto Covo

Helicon Siebe Gorman Type D Professional Diver at true scale

Siebe Gorman Type D Professional Diver

Diameter

40mm

41mm

Lug-to-Lug

42.5mm

lowest

47.5mm

Thickness

11.6mm

lowest

11.9mm

Water Resistance

300m

300m

Power Reserve

n/a

42h

MSRP

$350

lowest

$746

Movement

Miyota 9039

Miyota 9039

Case

3 specs
Diameter
40mm
41mm
Thickness
11.6mm
11.9mm
Lug-to-Lug
42.5mm
47.5mm

Crystal & Dial

2 specs
Dial Color
n/a
n/a
Lume
BGW9
None

Movement

1 specs
Power Reserve
0h
42h

Pricing

1 specs
MSRP
$350
$746
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