Audemars Piguet Cobra 5403 Jumbo 1970s
Audemars Piguet Cobra 5403 — Jumbo 18k Yellow Gold with Diamond Dial (1970s)
A striking icon of 1970s Audemars Piguet design — bold, sculptural, and unmistakably luxurious.
This rare AP Ref. 5403, nicknamed “Cobra”, gets its name from the woven, scale-like pattern of its heavy 18k yellow gold bracelet, which integrates seamlessly into the case for a fluid, serpentine aesthetic. The oversized 35 mm case (large for its era) delivers strong wrist presence while remaining ultra-slim and refined.
Its vertically brushed gold dial features 12 factory-set diamonds, perfectly complementing the warm tones of the gold case and bracelet. The hands and crown are original, completing the watch’s beautifully preserved authenticity.
Inside beats the legendary Audemars Piguet Caliber 2121, one of the finest ultra-thin automatic movements ever made — derived from the same architecture used in the early Royal Oak.
A rare opportunity to acquire a statement piece of AP’s design heritage — both powerful and elegant in equal measure.
- wrist size in our picture is 18 cm circumference -
DIAL:
- original never touched golden vertically brushed dial in flawless condition
- 12 factory Diamonds on the dial
- original hands & crown
BRACELET & CLASP:
- 18k yellow gold AP bracelet is fitting up to a 18 cm and is slightly adjustable at the clasp (around 0.5 cm) / 2 mm thick
- major adjustments have to be made by a goldsmith
- 18k yellow gold AP claspÂ
CASE:
- excellent overall condition, showing minor traces of use
- 3- body 18k yellow gold case with screw-down case back from casemaker C.R. Spillmann & Co. SA
- 35 mm (without crown) / 42 mm (lug-to-lug) / 22 mm (between lugs) / 6.8 mm thick
- year: 1970s
- reference: 5403
- total weight: 143 g
MOVEMENT:
- Audemars Piguet Cal. 2121 - automatic
- 36 jewels, 19800 A/h, 40 hours power reserve
- professionally serviced 03/2025
- +5 sec/d / 250°
BOX & PAPERS:
- GOLDAMMER certificate of authenticity & service documentation card
- GOLDAMMER box
GOLDAMMER REFERENCE: #1001
Original: $49,223.31
-65%$49,223.31
$17,228.16Product Information
Product Information
Shipping & Returns
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Description
Audemars Piguet Cobra 5403 — Jumbo 18k Yellow Gold with Diamond Dial (1970s)
A striking icon of 1970s Audemars Piguet design — bold, sculptural, and unmistakably luxurious.
This rare AP Ref. 5403, nicknamed “Cobra”, gets its name from the woven, scale-like pattern of its heavy 18k yellow gold bracelet, which integrates seamlessly into the case for a fluid, serpentine aesthetic. The oversized 35 mm case (large for its era) delivers strong wrist presence while remaining ultra-slim and refined.
Its vertically brushed gold dial features 12 factory-set diamonds, perfectly complementing the warm tones of the gold case and bracelet. The hands and crown are original, completing the watch’s beautifully preserved authenticity.
Inside beats the legendary Audemars Piguet Caliber 2121, one of the finest ultra-thin automatic movements ever made — derived from the same architecture used in the early Royal Oak.
A rare opportunity to acquire a statement piece of AP’s design heritage — both powerful and elegant in equal measure.
- wrist size in our picture is 18 cm circumference -
DIAL:
- original never touched golden vertically brushed dial in flawless condition
- 12 factory Diamonds on the dial
- original hands & crown
BRACELET & CLASP:
- 18k yellow gold AP bracelet is fitting up to a 18 cm and is slightly adjustable at the clasp (around 0.5 cm) / 2 mm thick
- major adjustments have to be made by a goldsmith
- 18k yellow gold AP claspÂ
CASE:
- excellent overall condition, showing minor traces of use
- 3- body 18k yellow gold case with screw-down case back from casemaker C.R. Spillmann & Co. SA
- 35 mm (without crown) / 42 mm (lug-to-lug) / 22 mm (between lugs) / 6.8 mm thick
- year: 1970s
- reference: 5403
- total weight: 143 g
MOVEMENT:
- Audemars Piguet Cal. 2121 - automatic
- 36 jewels, 19800 A/h, 40 hours power reserve
- professionally serviced 03/2025
- +5 sec/d / 250°
BOX & PAPERS:
- GOLDAMMER certificate of authenticity & service documentation card
- GOLDAMMER box
GOLDAMMER REFERENCE: #1001
