Seiko Alpinist SPB 507 Automatic 20 BAR Wristwatch, Extra Strap, Original Box
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Seiko Alpinist SPB 507 Automatic 20 BAR Wristwatch, Extra Strap, Original Box 1Seiko Alpinist SPB 507 Automatic 20 BAR Wristwatch, Extra Strap, Original Box 2Seiko Alpinist SPB 507 Automatic 20 BAR Wristwatch, Extra Strap, Original Box 3Seiko Alpinist SPB 507 Automatic 20 BAR Wristwatch, Extra Strap, Original Box 4Seiko Alpinist SPB 507 Automatic 20 BAR Wristwatch, Extra Strap, Original Box 5Seiko Alpinist SPB 507 Automatic 20 BAR Wristwatch, Extra Strap, Original Box 6Seiko Alpinist SPB 507 Automatic 20 BAR Wristwatch, Extra Strap, Original Box 7Seiko Alpinist SPB 507 Automatic 20 BAR Wristwatch, Extra Strap, Original Box 8
Seiko

Seiko Alpinist SPB 507 Automatic 20 BAR Wristwatch, Extra Strap, Original Box

SPB121
Deal Score25
$7757% above MSRP (MSRP $725)
Watch OnlyNew / Unworn

Why This Score?

Poor deal: good condition, slightly below market. Verify seller reputation before purchasing..

Key Drivers
Good condition
Slightly below market
Low seller trust score
Watch only (no box or papers)

The model prioritized pricing data from 13 comparable sales over a 90-day window.

Watch Specs

39.5mm
Diameter
46.4mm
Lug to Lug
13.2mm
Thickness
20mm
Lug Width
Caliber
6R35
Movement
Automatic
Crystal
Sapphire
Case Material
SS
Dial
Green
Strap
Leather
MSRP:
$725
Introduced:
2020

Perceived Size

How it wears, not just how it measures

~48mm

vs 46mm L2L

Compact (36mm)Substantial (60mm)

↑ 13.2mm case thickness adds +2mm wrist presence

Will this fit your wrist?

Slide to your wrist circumference to see the fit diagram.

Wrist circumference17 cm
12cm17cm (avg)22cm

Sold Comps (180 days)

FULL SETBOX ONLYPAPERS ONLYWATCH ONLYAsking Price
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