Seiko Landmaster AGS First-Generation JDM Icon

Up for sale is the watch that launched the legendary Landmaster line: the Seiko SBBW005, the very first Landmaster ever produced, released in 1993. This is a piece of Seiko history, a first-generation Japan Domestic Market (JDM) model powered by Seiko’s groundbreaking AGS (Auto Generating System) movement, the technology that would later be rebranded as Kinetic.

The Landmaster was designed by legendary Seiko designer Ikuo Tokunaga, the man behind the Scubamaster and Flightmaster.
It was the tool watch of choice for Japanese explorers and alpinists, worn on expeditions to the North and South Poles and on Everest.

The case is machined from a single block of stainless steel, a one-piece monocoque case into which the movement is installed from the front, so the classic caseback seam (a gasket that ages and leaks) simply doesn't exist.

Upgraded with a brand-new lithium-ion capacitor right before listing, replacing the older original-style power cell. This improves power reserve from approximately 10-14 days to around 4-6 months.

Key Features:
- Caliber 5M23 AGS (Kinetic)
- Stainless steel monocoque case
- Stainless steel bracelet
- Sapphire crystal
- Bidirectional compas bezel
- Screw-down crown
- Power reserve indicator via pusher at 2 o’clock
- 200m water resistance
- Brand-new lithium-ion capacitor

- Condition: S (Like New) - See full details below

Dimensions:
- Case Diameter: 42mm
- Lug tip to lug tip: 48mm
- Thickness: 13mm
- Wrist circumference: up to 18cm

High resolution photos:
https://imgur.com/a/ZgtGQgi

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Hi there! I’m a long-time watch enthusiast and collector with over 20 years of experience in the hobby. I’m mainly into Japanese watches: Grand Seiko, high-end Seiko, Casio Oceanus — basically anything that offers great value and proper watchmaking without the silly price tags. I like watches that punch above their weight, and that’s exactly the type I tend to buy, wear, and sell.

Every watch I sell is carefully inspected and photographed by me. I take pride in showing the watch honestly — no hidden marks, no stock photos, no surprises. What you see in the pictures is exactly what you’ll receive.

I’m based in Lixnaw, Co. Kerry and have built a solid track record here on Adverts.ie for being straightforward, reliable, and easy to deal with. I don’t entertain lowballing, as my prices are already fair. Lowballers and other 'exotic offer' experts, please ignore this sale.
And just to be fully clear: I’m not looking for swaps or part exchanges. I prefer straight cash sales only.

All my watches are graded using my standardised condition scale:

N (New) — unworn condition. Typically includes full set (box, papers, tags).

S (Like New) — almost indistinguishable from new. No visible scratches or marks. Crystal and case flawless.

A (Excellent) — Lightly worn with minimal signs of use. Minor hairline scratches visible only on close inspection.

V (Very good) — Gently used with only minor signs of use; the crystal may carry minor traces consistent with normal wear, but they do not stand out. Overall condition remains clean and attractive.

B (Good) — Regularly worn with moderate signs of use. Noticeable scratches on case or bracelet; crystal may have faint marks but remains in good condition.

C (Fair) — Clearly worn with pronounced scratches, dings, or crystal marks. Functional but cosmetic wear is obvious; may benefit from servicing.

Cheers!
Jake