A Quartz Icon in Full Gold — AP Ref. 6005BA with Diamonds

An 18k yellow gold masterpiece from Audemars Piguet’s “Quartz Line,” not officially a Royal Oak — but every bit as striking.

This Ref. 6005BA is a rare statement piece from the 1980s that blends the iconic design cues of AP’s Royal Oak era with a distinctly elegant twist. Weighing in at 146 grams of solid gold, this timepiece is a nugget of haute design and luxury.

It features a golden hobnail dial that shimmers under light, elegantly complemented by 11 factory-set diamond hour markers and a minimalist stick handset. The sapphire crystal, unsigned pusher crown, and polished bezel add to its clean, sophisticated aesthetic.

The integrated 18k yellow gold bracelet hugs the wrist seamlessly and fits up to 19 cm. Inside, the ultra-thin Audemars Piguet Caliber 2511 Quartz ensures flawless reliability—just like the razor-sharp case finishing that has been preserved to AP’s factory standards.

Whether you’re a collector of refined vintage luxury or simply appreciate gold and geometry in perfect balance, this AP 6005BA makes a bold yet elegant statement.

- wrist size in our picture is 18cm circumference -

DIAL:

• original never touched golden colored hobnail dial in flawless condition with 11 factory diamond hour markers
• original hands & crown
  

BRACELET & BUCKLE:

• the original Audemars Piguet 18k yellow gold "Royal Oak" bracelet is fitting up to 19 cm wrist size / 2 mm thick
  
• integrated 18k yellow gold Audemars Piguet clasp

CASE:

• excellent overall condition, showing very minor traces of use 
• 3- body 18k yellow gold case with screw down case back
• polished to AP factory specification
• 32 mm (without crown) / 41 mm (lug-to-lug) / 22 mm (bracelet) / 7 mm thick
  
• Year: 1980s
• reference: 6005BA
• total weight: 146 g

MOVEMENT:

• Audemars Piguet Quartz - Caliber 2511
• professionally serviced 05/2025

BOX & PAPERS:

• GOLDAMMER certificate of authenticity & service documentation card
• GOLDAMMER box

GOLDAMMER REFERENCE: #922