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Breguet, founded in 1775 by Abraham-Louis Breguet, remains one of Switzerland’s most historically important maisons, revered for its innovation, refinement, and technical artistry. The Hora Mundi line showcases the brand’s mastery of travel complications, combining practicality with unmistakable Breguet elegance.
The reference 3700BA/129/V6 is a sophisticated World Time wristwatch crafted in 18K yellow gold. At 38mm, it wears with timeless proportions, balancing refinement with modern usability. The beautifully finished automatic movement powers the signature rotating city ring and day/night indication—making it a serious collector’s piece and an ideal daily companion for global travelers.

✔ 18K Solid Yellow Gold case, 38mm
✔ World Time complication with city disk & day/night indicator
✔ Automatic Breguet movement with high-grade finishing & 21K Gold Rotor.
✔ Highly undervalued reference – excellent investment potential. Don't forget to check our blog on our site about - Undervalued and underappreciated — the Breguet Hora Mundi World Time Ref. 3700BA / 129 / V6.
✔ Condition – Flawless with recent factory service, looks better than new.
✔ Factory Serviced – 12/2019 (Fully Factory Serviced and Overhauled took about 8 Months)
✔ Distinctive world time functionality through the exquisite crown – Divided into two parts: (i) the inner block-shape engraved with 'BREGUET' and (ii) the beautifully adorned outer dome.
(i) The inner block shape rotates the reference cities on the outer bezel. There's no need to pull the crown out; it remains easily accessible.
(ii) The outer domed crown controls the remaining functions, such as setting the local time.
Please review all photos carefully as they form part of the description. This timepiece is tested, fully operational, and ready to wear or display in any serious collection.
| Reference | 3700BA/129/V6 |
| Case | 18K Yellow Gold |
| Case Size | 38mm (without crown) |
| Case Back | Solid 18K Yellow Gold |
| Crown | Fluted gold crown |
| Crystal | Sapphire crystal |
| Dial |
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| Complications | World Time, Day/Night indication |
| Movement |
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| Strap | High-quality leather strap |
| Box & Papers | Includes Breguet Service Box |
| Timing Test | 0 s/day In-House Time Test Results (See Service Level Tab)** |
| Certified Pre-Owned | Passed 25-point inspection – Service Level: 1 |
| Notes | Made in Switzerland. All functions are tested and working. |
The Breguet Hora Mundi Ref. 3700BA remains one of the most undervalued world time watches on the secondary market. With its elegant 38mm 18K gold case, practical world time complication, and Breguet’s unmatched heritage, this reference offers exceptional value compared to competing world timers from Patek Philippe or Vacheron Constantin. For collectors seeking a rare opportunity to acquire a complication-rich Breguet at a still accessible price point, this timepiece is an outstanding choice.
Wire Transfer Customer
Wire Transfer Customer
Wire Transfer Customer
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Dude - this watch is fucking amazing! Totally 1970s. 861 movement. Band is sized perfectly. It’s truly close to 100% perfection! Many thanks. Cheers,
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