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  1. Watches - Private Sellers and Sponsors
    Up for sale is my Seiko Sumo SPB103 (Hulk). This is a diver-style watch with an elapsed time bezel, automatic 6R35 movement, and screw-down crown. This is the original 3rd generation release with the nicely framed date window. Includes factory bracelet (unworn, with all links) and aftermarket...
    $425 USD
  2. Watches - Private Sellers and Sponsors
    One more watch for sale today and it's another Sumo (I have way too many Sumos!). This time it's the SPB179 "Ice Diver" Sumo. This is the complete set with inner and outer boxes, warranty card and manual, and original Maglite flashlight. I purchased the watch brand new from Little Treasury...
    $800 USD
  3. Watches - Private Sellers and Sponsors
    This is one I didn’t think I would sell but I have decided to downsize and only keep a small number I wear regularly. This was my last standing from my Seiko collection and is the first Gen with the engraved crown and no X on the dial. Upgrade to a ceramic bezel insert and domed AR sapphire...
    $1 USD
  4. Watches - Private Sellers and Sponsors
    This started its life as a SBDC061 (44mm diameter x 51mm lug to lug x 13mm thick, 20mm lug width) but was sent to Duarte at Northeast Watchworks who beadblasted the case, installed the SBDX017 MM300 dial and handset, and pressure tested the watch. It comes on a Crafter a blue strap. Watch is in...
    $1 USD
  5. Watches - Private Sellers and Sponsors
    This started its life as a SBDC061 (44mm diameter x 51mm lug to lug x 13mm thick, 20mm lug width) but was sent to Duarte at Northeast Watchworks who beadblasted the case, installed the SBDX017 MM300 dial and handset, and pressure tested the watch. It comes on a Crafter a blue strap. Watch is in...
    $1 USD
  6. Watches - Private Sellers and Sponsors
    Seiko Sumo SPB179 for sale. Watch is in excellent condition. I wore it twice. No trades. $650 includes PayPal fees and shipping to CONUS only. Case Stainless steel Case size: 44mm Crystal: Sapphire Screw-down crown & caseback Strap: three-link bracelet with folding clasp & diver's extension...
    $650 USD
  7. Watches - Private Sellers and Sponsors
    Hello all, For your consideration is my Seiko SBDC005 ORANGE SUMO! Long discontinued, sadly. I purchased this watch from the original owner in 2020. It was a grail for me as I thought I'd never come across one. Unfortunately for me I do not love the way the Sumo fits my wrist. I absolutely love...
  8. Seiko watch reviews
    Hi folks! I've been contemplating a Sumo for a long time. It's always interested me because of its unique and beautiful case design and great specs in its price-class. I still avoided it for a long time due to the size and I didn't happen to see any great deals on the colors that I was most...
  9. Reviews
    Hi folks! I've been contemplating a Sumo for a long time. It's always interested me because of its unique and beautiful case design and great specs in its price-class. I still avoided it for a long time due to the size and I didn't happen to see any great deals on the colors that I was most...
  10. Watches - Private Sellers and Sponsors
    Hi All - For sale is a like new Seiko Sumo Hulk. I bought this brand new off the forum in Feb for my birthday. Wore it very sparingly for a month or two and then was able to grab a tuna, so it sat in a watch box. Comes with box / warranty card, original SS bracelet, and uncle Seiko strap! No...
  11. Seiko
    Hello seiko friends, I'm looking to acquire a Seiko Sumo Spb101j1 - Black; in the next week and have been scouring the internet for reviews but am a little disappointed to find few of them. https://www.seikowatches.com/global-en/products/prospex/spb101j1 This is my first purchase of an...
  12. Watches - Private Sellers and Sponsors
    !!! SOLD SOLD SOLD !!! Pre-Owned Seiko Silver Sumo LE SPB029 This stunning limited edition Seiko Sumo features a 44mm stainless steel case and a stylish silver-white color way. This watch is in great condition, and comes with all boxes and papers and snorkeling mask! Covered by our two year...
  13. Watches - Private Sellers and Sponsors
    Condition -"Beautiful working condition, super clean 45MM Seiko SUMO professional diver watch made in Japan." Best price on WUS!! Seiko SBDC031 Prospex Sumo Professional Scuba Diver . This watch is preowned but in beautiful working condition. It comes with its original seiko sumo oyster...
  14. Watches - Private Sellers and Sponsors
    sold sold sold Here we have the desirable first gen Sumo without the PROSPEX logo. This is the watch that started the entire Sumo line you see today. The watch wears extremely well on the wrist and definitely has wrist presence. The watch is in great condition and comes with what is pictured...
  15. Watches - Private Sellers and Sponsors
    Reposted.
  16. Watches - Private Sellers and Sponsors
    SOLD SOLD SOLD The great purge of 2020 continues so here we have a BNIB Seiko SPB125. I bought this on a whim and never wore it. This comes from an AD and has stickers/handtags in place. This Sumo has definite improvements over a standard Sumo besides the awesome black coating. It has the new...
  17. WTT - Trade Corner
    *TRADED* As the title suggests. I'm interested in trading my Glycine Combat Sub GL0090 for a Seiko Sumo or a Longines Conquest 39mm Automatic. This particular watch has had the stock Selitta SW200-1 movement swapped with a new ETA 2824-2 (I have the receipt for the movement purchase dated...
  18. Watches - Private Sellers and Sponsors
    Greetings, Looking to sell this BNIB 3rd Gen Sumo, I bought it from a SEIKO AD and everything is prefect and lines up nice. Asking $775 shipped G&S. Will throw in a new Jubilee bracelet for a extra Hundred. CONUS ONLY. Only Trades I would do is for a Oris Green Hulk 43mm. Message with any...
  19. Watches - Private Sellers and Sponsors
    Greetings, Looking to sell this BNIB 3rd Gen Sumo, I bought it from a SEIKO AD and everything is prefect and lines up nice. I had the OEM bracelet changed to a brand new Starpcode Jubilee and it's looks killer. Looking to get what I paid for it which was $978 and will throw in the Jubilee at...
  20. Watches - Private Sellers and Sponsors
    SOLD SOLD SOLD I'm selling this for a friend and might just end up buying it myself. Here we have the amazing Sumo with the 6r15 and an extra StrapCode bracelet. I helped my buddy source this watch when he started getting more and more interested in watches. Now he is full on in the hobby and...
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