Audemars Piguet
Royal Oak “Jumbo” Two-Tone | 25402SA

  • Collection: Royal Oak Jumbo
  • Model reference: 25402SA
  • Case/Size: Yellow gold & steel, 39mm
  • Dial: Grey with “Petite Tapisserie” pattern
  • Movement: Automatic winding
  • Functions: Hours, minutes
  • Specificity: No 1
  • Collection: Royal Oak Jumbo
  • Model Reference: 25402SA
  • Case/Size: Yellow Gold / 39mm
  • Dial: Grey with “Petite Tapisserie” pattern
  • Movement: Automatic winding
  • Functions: Hours, Minutes
  • Specificity: No. 1
  • Condition / Year: Very Good / Excellent / 1989
  • Box / Papers: Yes / No
  • Price: Upon Request


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The ‘Royal Oak’ overturned the prevailing codes in 1972 during a period of existential crisis for the watch industry due to the boom of the cheap Quartz watches made in Asia.
The company had to come with a bold, solid stainless sports steel luxury watch, they gave the mission to Gerald Genta to design it.
He got the inspiration from a deep-sea-diving helmet, the result was an octagonal bezel, visible mounting screws, a large case of 39mm with an integrated bracelet, a very futuristic design for the seventies.
Within 2-3 years they sold about 1000 watches establishing a new segment within the industry and pioneered the popularity and desirability of the steel sports luxury watch.
The first model released was the reference 5402 known today as the “Royal Oak A series”, with a thin automatic calibre 2121 movement that is still made today.
Since they treated steel as gold, the level of finishing was remarkable and so was the retail price, for comparison purpose a similar Rolex sport watch was 10x cheaper.
Today, Audemars Piguet still produces a range of Royal Oaks in different sizes (33 to 41mm) for ladies and men, from titanium, rose gold, yellow gold and platinum metals, various dial colours and with different complications.


*Following the success of the “Jumbo” steel Royal Oak, Audemars Piguet introduced in 1977 the very first 18k yellow gold version under reference 5402BA, production of these models lasted until the early 1980s.

While the first 5402 steel models were divided into four alpha-numerical series from A to D, the yellow gold as well as the two-toned models were first launched in the late 1970s and were numbered simply from N°1.

The two-tone (steel & yellow gold) model was launched in 1985 and the most coveted serial number “1” is engraved on the case back of our reference 25402SA. This time piece was initially not meant to be sold because used for marketing purpose by the executives during trade fairs and other meetings with retailers and distributors.

Kept in pristine condition, it is a close to new old stock since the case shape and proportions are near perfect. Accompanied by its presentation box with outer packaging and original invoice with date that proves it was subsequently sold on January 6th, 1989.

Viewing possible by prior appointment.




Audemars Piguet – bio

Audemars Piguet is a Swiss manufacturer of mechanical watches founded in 1875. They began in the Vallée de Joux. Jules Louis Audemars formed a partnership with Edward Auguste Piguet. Audemars created complicated blank watch movements for other manufactures to use. Piguet specialized in the final regulation of watches. They then split responsibilities when they began their own company. Audemars was in charge of production and technical aspects while Piguet focused on sales and management. One of their first achievements was creating the first repeater wristwatch in 1892 and in 1972 the iconic steel “Royal Oak”.

Additional information

Accessories :

Accompanied by an 'Audemars Piguet' warranty certificate, product literature and an original leather presentation box