Audemars Piguet Royal Oak Quantieme Annuel 25920ST Blue Dial


The only RO annual calendar…

Not only does the Royal Oak turn 50 year, there was also a RO-themed sale this past week at Phillips that saw record prices achieved for this iconic watch. We are delighted to offer this stunning Royal Oak annual calendar, as we believe the only annual calendar to ever be offered by Audemars Piguet.

The blue grande tapisserie dial is in superb condition with the date around the outer edge and an unusual month indicator sub dial at five o’clock. The annual calendar can differentiate between months with 30 and 31 days and so only needs adjusting one a year on 1st March.
The watch has a red date hand the months with 31 days in are in red text on the date dial. The 36mm steel case remains in outstanding condition as does the integrated bracelet that would fit a wrist size of up to 18cm.

This funky AP comes with the print out of a digital extract that confirms that the watch was sold in 2000. The 36mm Royal Oak packs a big punch that we love – you can read more about our thoughts here! The automatic movement has been fully serviced by our watchmaker.


- Reference 25920ST
- 36mm steel case
- Serial E363xx-490xx-05xx
- Blue grande tapisserie dial with date and months
- Integrated bracelet to fit a wrist up to 18cm
- Calibre 2224/2814 automatic movement
- Print out of digital extract from Audemars Piguet
- Fully serviced by our watchmaker
- One-year mechanical warranty
- Includes a handmade leather watch pouch
- Free worldwide Fedex Priority shipping

We Love Watches

We are passionate about vintage watches and we love talking about them! That is why we don't sell our watches with a simple "Add to cart" button, but instead try to emulate a truly boutique experience online. Helping you find your perfect vintage watch is our Watch Department’s raison d’etre. Whatever you would like to ask, please do. Building our community of watch lovers is central to our mission at Bulang and Sons.

We Know Watches

At Bulang and Sons we have sold thousands of watches over the years. We are a small team of experienced collectors and connoisseurs who are all part of an extensive global network of buyers and sellers. We have a great reputation for offering only the highest quality watches. We have one simply rule: we only buy and sell watches we want to own ourselves. And yes, we are still collectors too.

We Guarantee Watches

As collectors, we know how intense the search for a specific vintage watch can be. Once you find it at Bulang and Sons, we want to make things easy, safe and fast for you. Therefore, we offer the most comprehensive return policy and warranty; you will not find a safer place on the internet to buy a vintage watch. You can relax and enjoy your deal with Bulang and Sons.

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