Seiko 6309-7049 “Suwa Turtle” — Fully Serviced, Hacking & Jeweled 6306 Bridge Upgrade

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Original price was: $850.00.Current price is: $750.00.

Seiko 6309-7049 “Suwa Turtle” — Fully Serviced, Hacking & Jeweled 6306 Bridge Upgrade

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Seiko 6309-7049 “Suwa” Turtle — Fully Serviced, Original Dial, Hacking & 6306 Jeweled Upgrade

A fully serviced Seiko 6309-7049 “Suwa” Turtle with a clean original dial and a mechanical enhancement package:
hacking seconds conversion plus a 6306 train bridge upgrade with added jeweled support (including barrel arbor jewel points).
Built to be worn and verified at the bench, with transparency-first documentation throughout.

Video overview

Restoration overview and bench documentation of this Seiko 6309-7049.


Highlights

  • Reference: Seiko 6309-7049 “Turtle” (Suwa dial)
  • Movement: Seiko 6309A automatic diver caliber, fully serviced
  • Upgrade: Hacking seconds conversion (6306A center wheel bridge + hack)
  • Upgrade: 6306A train bridge installed (additional jeweled support; barrel arbor jewel points)
  • Crystal: New mineral crystal installed (original crystal included; heavy wear)
  • Gaskets: New gaskets throughout
  • Strap: DAL1BP strap (used, minimal wear)
  • Performance: Verified at the bench (timegrapher photos below; ~+5 s/day average across shown positions)

Performance Photos

Timegrapher readings shown below are provided for transparency. Mechanical watch performance may vary with position,
wear, and environment. (All positions shown in the photo gallery.)

Condition & Authenticity Notes

  • Dial: “Suwa” dial. Please review all photographs carefully for originality and condition details. I did apply a clear binder to protect the lume plots as they were starting to flake.
  • Crystal: New mineral crystal installed. Original crystal included and shows heavy wear.
  • Case Condition: Vintage wear is present throughout, including surface marks consistent with normal use.
    I have not refinished case at all, only cleaned. Detailed macro photographs are provided for transparent evaluation.
  • Upgrades Disclosed: Hacking conversion and 6306 train bridge/jewel enhancement installed for functional improvement.
    Original bridge and center wheel bridge are included.
  • All functions operate as designed, including hacking after conversion.

Restoration Summary (From the Bench)

This 6309-7049 received a complete movement service with inspection, cleaning, and correct lubrication, followed by
functional verification and regulation. A hacking conversion was installed to enable stop-seconds time setting, and
a 6306 jeweled train bridge upgrade was installed to add support at select wear points.
  • Complete movement disassembly, cleaning, and inspection
  • Correct lubrication applied throughout
  • Regulation and verification at the bench
  • Hacking seconds conversion installed and tested
  • 6306 train bridge / jeweled enhancement installed and verified
  • New gaskets installed throughout
  • New mineral crystal installed (original crystal included)
Note: Water resistance cannot be guaranteed due to age. Pressure testing is recommended prior to water use.



What’s Included

  • Restored Seiko 6309-7049 “Suwa” Turtle with hacking & 6306 jeweled upgrade
  • DAL1BP strap (used, minimal wear)
  • Original bridge and original center wheel bridge (included)
  • Original crystal (included; heavy wear)
  • Full photo set in the product gallery

Shipping & Handling

  • Carefully packed and boxed
  • Insured shipping with signature & tracking
  • Domestic U.S. shipping

Second Tour Timeworks — restored to be worn, verified to be trusted.