WatchUSeek Watch Forums banner

mm300

  1. FS: San Martin Marine Master 300 NH 35 Automatic 44mm Green

    Watches - Private Sellers and Sponsors
    San Martin MM300 44mm Green Movement: Time Module NH35A [automatic mechanical movement] Case: 316L stainless steel 44mm in diameter (excluding crown) Thickness 15mm (including crystal) Lug width 20mm (with the inside of the strap) Mirror: sapphire crystal (with Swiss shadowless anti-reflective...
  2. FS - Seiko MM300 SBDX017 - Full Set

    Watches - Private Sellers and Sponsors
    Hi WUS - I just bought a smart trainer for winter cycling, so making a tough call and reposting my MM300 SBDX017 for sale to cover the cost. Asking $1750 including express, insured shipping. Condition: Overall, the piece is in good condition. In the spirit of full disclosure, it has not been a...
  3. Sold: Seiko Tuna Marinemaster 300m SBBN037 Blue Limited BNIB Full AD Set

    Watches - Private Sellers and Sponsors
    ⌚ BNIB 1 Year International Warranty ✔ Brand New Unworn Authorized Dealer Set dated 31 Aug 2020. Full set with box, tags, stickers, manual, warranty, certificate. 💎 Very sought after watch and great collectable. Not easy to find limited blue edition, especially AD with Worldwide warranty. ✔...
  4. LNIB Seiko MarineMaster 300 SBDX017

    Watches - Private Sellers and Sponsors
    Price: $2,400 REDUCED to $2,275 All boxes, papers, warranty card, unused strap, unused bracelet included. I bought the watch a couple weeks ago, new from shoppinginjapan. The SBDX017 is now out of production, and it is the last model mm300 without the prospex "x" logo on the dial. Watch is in...
  5. Wallet says run-roh!

    Dive watches
  6. SOLD - BOGO! SanMartin/Proxima MM300 Homages

    Watches - Private Sellers and Sponsors
    This set has been sold. Thanks! I am offering for sale a special Buy One Get One deal on a pair of Marinemaster homage-style watches. They were purchased from WR Watches and are sister brands San Martin and Proxima. There are a number of threads on these high quality watches. Here are just a...
  7. Clasp Material for Seiko Marinemaster SLA021/023

    Seiko
    I've got a quick question about the latest MM300. The older SBDX001/017 models had a titanium clasp. Does anyone know if the clasp is still made with titanium? -Thanks!
  8. [WTB] SBDX001 dial

    WTB - Wanted to Buy
    Hey all, Looking to buy / trade oem parts for an SBDX001 dial!
  9. Seiko Marine Master (MarineMaster) SBDX017 (Just Serviced)

    Watches - Private Sellers and Sponsors
    [WITHDRAWN] I will likely regret this, but looking to make some changes to my collection so am parting ways with this lovely Seiko MM SBDX017. Comes with box and papers. Dimensions: 44 It’s a big watch, but because of the shape and polishing (as many reviews point out) it doesn’t wear...
  10. Can Someone Please Figure This Out! (Clasp Rant)

    Straps & Bracelets
    Can someone please, please, please, figure out a way to scale up the 16mm Ginault/chinese glidelock clasp to 18mm and redesign it to accept 18mm spring bars on both ends? The watch community is so obviously starved of a really solid clasp to throw onto their Seiko stock / Strapcode / Other...
  11. FS: Seiko SLA019 (MM300 Green) - Great Condition - $3100

    Watches - Private Sellers and Sponsors
    Hello WUS, for sale is my lovely SLA019 MarineMaster 300M green limited edition. This is a full set with AD-stamped paperwork, and is still under factory warranty until 06/2022. It also comes with a free first factory service, courtesy of the Seiko boutique in Miami FL. It is a full set in great...
  12. FS: Proxima Bronze Seiko Samurai + MM300 Homage

    Watches - Private Sellers and Sponsors
    *Model: Proxima Bronze Seiko Samurai + MM300 Homage (Cusn8 case, ceramic bezel with lumed pip) *What's Included: Box & Papers, Watch and Borealis Rubber Strap *Condition: 98% + Watch was worn very lightly in rotation (less than 2 weeks ) with other 22mm watches to see which one I would keep...
  13. Omega Bracelet on a MarineMaster?

    Seiko
    Hello WUS, I own a beautiful Seiko SLA021 and I love the watch and am trying desperately to like the bracelet (I am a bracelet guy). I have very sensitive skin around my wrists so if a watch is to be large and beefy, it needs to have great ergonomics as far as link contouring and clasp...
  14. SOLD, SOLD Seiko SLA021J - Black dial new MM300 + Strapcode bracelet and 017 rubber- $1975

    Watches - Private Sellers and Sponsors
    Have decided to sell my SLA021J, bought in December last year. I have tried very hard to love the watch and sometimes I do, but sometimes I don't. It has the 8L35 Grand Seiko movement, ceramic bezel insert, internally domed sapphire crystal, monocoque case, ratcheting strap and is...
  15. FS: Seiko MM300 SBDX017 - $2100 Full Set

    Watches - Private Sellers and Sponsors
    Need to fund a purchase, so making a tough call and posting my MM300 SBDX017 for sale. It's a truly special - and hard to find - watch, just can't justify having more watches than I can wear in my rotation. Overall, the piece is in great condition. In the spirit of full disclosure, you'll...
  16. WITHDRAWN

    Watches - Private Sellers and Sponsors
    I'm on the fence about whether or not to sell this one. 300m w/r, lumed ceramic bezel, internally domed sapphire crystal, Diashield coating and the 8L 35 Grand Seiko movement. I bought it in the middle of December and have worn it a handful of times. Worn almost exclusively on the rubber...
  17. FS: **PRICE DROP** Seiko MM300 SBDX017

    Watches - Private Sellers and Sponsors
    **PRICE DROP: Reduced to $2100** Making a tough call and posting my MM300 for sale. It's a truly special watch, just can't justify having more watches than I can wear in my rotation. Overall, the piece is in great condition. You'll notice wear on the clasp and two light scratches on the...
  18. FS - Seiko Marine Master Second Hand

    Watches - Books, Parts, Tools, Winders
    Up for sale is Seiko Marine Master Second Hand. I bought it for a mod but I ended up not using it. I'm asking $12 net to me and it includes free CONUS Shipping & Paypal fees. My watchuseek feedback links: https://www.watchuseek.com/f63/juice009-feedback-reputation-thread-4664665.html...
  19. SOLD: Seiko SLA021 MM300 full kit $1,800 shipped ConUS

    Watches - Private Sellers and Sponsors
    SOLD Hello, I Sold my Seiko SLA021 Marine Master 300. I am the original owner of this watch. It has no marks on the case, bracelet, bezel insert, or crystal. The rubber strap in unworn. The bracelet has been sized to 7" and comes with all removed links. This watch runs +/- 5 sec a day last...
  20. FS: Crafter Blue CURVED END RUBBER STRAP CB03 FOR Seiko MARINEMASTER

    Watches - Straps & Bracelets
    BNIB CONDITION This is the black strap and it has never been worn. These pictures showing it mounted are from another watch and only meant to show you the type of strap this is. It is meant to be used with your OEM Seiko buckle. This strap should also fit your MM200 models as well. $70...
Top