Audemars Piguet
Royal Oak Ref. 5402 | steel

First 1000 A-Series

Regular price

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Audemars Piguet
Royal Oak Ref. 5402 | steel

First 1000 A-Series

Regular price

It’s been 47 years since the creation of the original Audemars Piguet Royal Oak and this now classic piece, is more popular than ever. First unveiled by Audemars Piguet in 1972 and designed by Gerald Genta - who incidentally designed the Patek Philippe Nautilus amongst others - the Royal Oak Ref. 5402 has become a cultural icon due to its distinctive features and role as a pioneer for high-end luxury sports watches.

The early 1970s was a time of great change within the watch industry, where the concept of a luxury watch in steel was a truly revolutionary idea. Royal Oak ‘A-series’ watches from the early 1970s are highly-sought by collectors, owing to their rarity and unique place within the brand’s history. The reference 5402 Royal Oak is often referred to as ‘Jumbo’, on account of its relatively imposing size for the period.

Creation of the Royal Oak

On the eve of Basel’s 1971 fair, Gerald Genta was tasked with the creation of an “unprecedented steel watch" – his night's work, today considered one of the masterpieces of his career. Audemars Piguet managing director of the time, Georges Golay, contacted Mr. Genta with a view to designing a totally new, steel, waterproof sports watch – understanding that the waterproof technology would require innovative strategy. Gerald Genta’s inspiration for the iconic Royal Oak architecture was to replicate that of the scaphander diving helmet, on the watch case, complete with eight screws and the joint visible on the cases’ exterior. As Mr. Genta recounts

“I was given the ‘green light’ straight away to begin work on the prototype. I completed the prototype myself within a year. In 1970, I designed the watch. And it took one more year before industrial production, which finally came about in 1972”.

Intriguingly, prototypes for the Royal Oak are said to have been initially manufactured from white gold, as the softer material was easier to sculpt and manipulate the varying degree of angular, brushed and polished surfaces.

The Audemars Piguet Royal Oak debuted in 1972, as the most expensive steel watch ever made. The Royal Oak was not only unprecedented in its design, but also in its initial pricing to consumers. Once the Royal Oak was released, the retail price for the watch was 3,750 Swiss Francs, more than four times the cost of any other steel watch of the period. As a result of the watches’ groundbreaking design, the very first ‘A-series’ examples were limited to just 1000 pieces, initially getting off to a slow start. It was two years before another 1000 ‘A-series’ Royal Oak examples saw the light of day, completing a very limited series of 2000 ever produced.

An early A-series example

This steel, Royal Oak A-series watch is the perfect balance between utilitarian function and elegant design. The case and bracelet are excellently finished, with angular, beveled and polished edges. While the case has been refinished in the past, the overall quality of craftsmanship suggest this was carried out by the manufacture. The polished screws, bezel and case edges contrast with the brushed surface of the case and bracelet. At 39mm in diameter, and only 7mm thick, the Royal Oak case is a beautiful twist of perspectives and size.

The outer-case back correctly displays the unique serial number (A7XX), matching the last 3-digits on the inner case-back. The watch comes fully-equipped with its original A-series bracelet (end-links stamped 'AP'), original clasp (signed '4 74', dating production to the 4th quarter of 1972) and original clasp cover (signed 'Audemars Piguet'). The bracelet has limited stretch (more pronounced on the first link at 6 o'clock), though overall remains relatively tight. The crown was previously replaced during service by Audemars Piguet, though the owner requested to keep the original crown, which can be fitted back on the watch, at the buyer's discretion. 

This A-Series is distinguished by the placement of the AP’ logo above 6 o’clock, compared to later examples typically bearing the ‘AP’ logo at 12 o’clock. The weaving pattern of the ‘tapisserie’ pattern dial, forming the square and lozenge motif, alters the deep grey coloration of the dial as it reflects light from different angles. The dial displays hues of dark blue and brown in certain lights, adding texture and warmth to the overall watch. 

The dial further features a date aperture at 3 o’clock (with correct date disc) and luminous white gold hands and hour markers, with the hands having been replaced during service. The placement of the ‘Audemars Piguet’ lettering is consistent with that of an A-series dial, within the range of its unique designation – the first ‘A’ of ‘Audemars' also slightly larger than the second ‘A’, within the spacing inside the letter itself.

The movement

The A-series Royal Oak is powered by the ultra-thin AP caliber 2121, derived from Jaeger-LeCoultre’s legendary ultra-thin JLC 920 calibre movement. The caliber 2121 was based on the caliber 2120, an initial project of Jaeger LeCoultre in 1967, funded and contributed by Audemars Piguet, and famous for its adoption by Audemars Piguet, Patek Philippe and Vacheron Constantin. The ultra-thin automatic 2121 calibre features 36 working jewels, Gyromax balance and four ruby wheels to support the full-diameter rotor, which runs on a beryllium rail for stability. The AP calibre 2121 remains the thinnest full-rotor self-winding movement in the world, considered by many as one of the most stunningly refined and technically impressive wrist-watch movements ever made. Importantly, its movement serial number is within the range of its late A-series designation.


The present example was registered by Audemars Piguet in February 1973, though likely completed earlier, as evidenced by the accompanying Archive Extract.

Viewings can be arranged in Central London by appointment only.

Brand: Audemars Piguet
Model: Royal Oak A-series Ref. 5402
Movement: mechanical automatic AP Caliber 2121
Functions: date, hours, minutes
Features: unrestored, ‘tapisserie’ pattern dial
Case: 39 mm stainless steel
Crystal: sapphire
Bracelet: stainless steel AP-stamped A-series bracelet
Year: February 1973 (registered by Audemars Piguet)
Box & papers: Archive Extract
This Audemars Piguet Royal Oak A-series is in excellent condition and has perfect mechanical functionality. It is accompanied by an Archive Extract, which confirms that the watch was registered by Audemars Piguet in February 1973. The case and bracelet are excellently finished, with beveled, polished and granular surfaces. While the case has been refinished in the past, the overall quality of craftsmanship suggests this was carried out by the manufacture.

Further to this, the handset and crown have been replaced with appropriate service components - likely when this example was refinished, some time ago. The previous owner requested to keep the original crown, which can be fitted back on the watch, at the buyer's discretion. The bracelet has limited stretch (more pronounced on the first link at 6 o'clock), though overall remains relatively tight. It is guaranteed for authenticity and comes with a two-year warranty from A Collected Man.

All of our pre-owned watches have undergone thorough mechanical inspections, including being ultrasonically cleaned, serviced and resealed if appropriate and tested for at least four days, to ensure they meet our highest timekeeping standards. Our pre-owned and vintage watches, unless stated otherwise, are covered by a full or a limited twenty-four month warranty. For example, due to their age, some vintage watches should not be subjected to the same conditions as when they were new. Please see our Terms & Conditions for further information. 

All of our new watches are covered by the warranty from the original manufacturer. Please contact us for further information.

We offer complimentary worldwide delivery on our watches. If ordering from overseas, delivery will depend on the value of the timepiece and the destination. All import taxes and duties are the responsibility of the buyer.

If ordering from the UK before 1 PM, your watch will be sent the same working day. The courier will depend on the value of the watch, with all watches delivered the next working day.

Please note that pre-owned goods (in the United Kingdom) are subject to a marginal rate of VAT, which can not be reclaimed. For further information, please see here

You can cancel your order without giving any reason, within 14 days from the day the watch has been delivered to you.

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