[WTS] Seiko MM300 clasp - BNIB unworn

Seiko MM300 clasp - BNIB unworn

Seiko - MM300 · $80
This is a brand new and unworn Seiko MM300 ratcheting clasp, made of stainless steel.

  • Condition: Brand new, unworn
  • Material: stainless steel
Posted at
May 26, 2025, 9:58 PM
Sold
[WTS] Seiko MM300 ratchet clasp

Seiko MM300 ratchet clasp

Seiko - MM300 · $79
  • Clasp type: ratcheting clasp
  • Shipping cost: $79 (shipped USPS Priority conus)
  • Payment options: PayPal, Venmo, Zelle
Posted at
May 25, 2025, 10:08 PM
Active
SEIKO MARINE MASTER SLA053 MM300 SEIGAIHA (SPF)

SEIKO MARINE MASTER SLA053 MM300 SEIGAIHA (SPF)

· $1,750.002
Posted at
May 8, 2025, 12:30 PM
Expired
[WTS] Seiko Marinemaster 300 SLA047 Limited plus extras

Seiko Marinemaster 300 SLA047 Limited plus extras

Seiko - SLA047 MM300 · $1,800
The Seiko Marinemaster MM300 SLA047 features a unique monoblock case and offers 300m water resistance, powered by the 8L35 movement beating at 28,000 vibrations per hour.

  • Condition: Excellent condition
  • Case type: monoblock
  • Water resistance: 300m
  • Movement: 8L35
Posted at
May 18, 2025, 3:22 PM
Sold
Seiko spb079j mm200 with MM300 hands

Seiko spb079j mm200 with MM300 hands

Seiko - SPB079J SBDC063 · $425.004
A Seiko SPB079J modded with OEM MM300 hands, kept great time while fully wound, but loses time at end of wind in the watch box or on a winder. Minor micro scratches from wear.

  • Condition: Used with minor scratches
  • Case size: 44mm diameter
  • Movement type: 6R movement
Posted at
May 13, 2025, 9:01 AM
Expired
Seiko SLA059 (MM300)

Seiko SLA059 (MM300)

Seiko - SLA059 · $1,850.002
The Seiko SLA059 is a USA Special Edition diver's watch with a unique textured wave pattern dial, burgundy color, and mild sunburst effect. It features a monocoque case MM300 style, which has been discontinued, and includes a full set with the unopened rubber strap, matching cuff links, and extra links for sizing.

  • Condition: Essentially mint condition with light desk diving scratches on the clasp and bracelet
  • Case size: 44mm diameter
  • Water resistance: 200m depth rating
Posted at
May 9, 2025, 9:46 AM
Expired
SEIKO MARINE MASTER SLA053 MM300 SEIGAIHA LE

SEIKO MARINE MASTER SLA053 MM300 SEIGAIHA LE

Seiko - MM300 SEIGAIHA LE · $1,750.002
This Seiko Marine Master MM300 features a beautiful blue wave dial and satin finish solid stainless steel case. It has a uni-directional rotating bezel with ceramic material, making it extremely scratch-resistant. The watch also comes with a unique presentation box, which includes all original packaging, cuff links, and more.

  • Condition: Excellent
  • Case Material: Stainless steel
  • Bezel Material: Ceramic
  • Water Resistance Depth: 300
Posted at
May 8, 2025, 12:30 PM
Expired
[WTS] Seiko SLA047 SLA047J1 03/2024 MarineMaster 300 MM300 140th Anniversary Limited Edition Green Dial / Black Bezel Excellent Condition Full Kit

Seiko SLA047 SLA047J1 03/2024 MarineMaster 300 MM300 140th Anniversary Limited Edition Green Dial / Black Bezel Excellent Condition Full Kit

Seiko - SLA047J1 · $1,650.002
This is a Seiko SLA047J1 MarineMaster 300, a limited edition watch with a green dial and black bezel. It's a relatively new watch, purchased in March 2024 from an authorized dealer.

  • Condition: Excellent
  • Case Size: 40mm diameter
  • Bracelet Length: 7.13 inches (18cm) wrist size, with 2 additional links
Posted at
Apr 26, 2025, 3:05 PM
Expired
[WTS] Seiko SLA047 SLA047J1 03/2024 MarineMaster 300 MM300 140th Anniversary Limited Edition Green Dial / Black Bezel Excellent Condition Full Kit $1,650 CONUS Shipped

Seiko SLA047 SLA047J1 03/2024 MarineMaster 300 MM300 140th Anniversary Limited Edition Green Dial / Black Bezel Excellent Condition Full Kit $1,650 CONUS Shipped

Seiko - SLA047J1 · $1,650
This is a limited edition Seiko MarineMaster 300 with a green dial and black bezel, purchased in March 2024 from an AD. It has been worn sparingly on the rubber strap and shows no significant wear.

  • Condition: Excellent
  • Case Size: 40mm diameter
  • Bracelet Size: 18cm (7.13 inches)
  • Links Provided: 2 additional links
Posted at
Apr 26, 2025, 2:46 PM
Sold