Audemars Piguet Royal Oak Yellow Gold Tropical Dial ref 4100BA

Price on request

When it was launched in 1977, the reference 4100 was the third iteration of the AP’s iconic sports watch and the first to feature a centre seconds hand and at 35mm, was aimed at those that believed the Jumbo was too large.

Today we have an incredible example with tropical dial that has turned a crazy shade of orange from its original blue hue.

The mid-size Royal Oak packs a big punch that we love – you can read more about them here! This 35mm reference 4100 is in yellow gold and is in outstanding condition with strong lines on the case having benefitted from a recent polish.

The Stern-made blue petit tapisserie dial has turned the most insane shade of orange…it really is incredible and hyper rare to see such a thing.
The dial has no lume and diamonds at the hours. The bracelet is in good condition and would fit a wrist size up to 19cm. The watch has the correct calibre 2123, a modified Jaeger LeCoultre movement, which has been fully serviced by our watchmaker.

You will not see a Royal Oak like this again we are pretty sure this is unique and we urge you to be quick…this is a very desirable watch!


- Reference 4100
- 35mm yellow gold case
- Tropical orange tapisserie dial
- Integrated bracelet to fit a wrist up to 19cm
- Calibre 2123 movement
- Movement serial 215xxx
- Fully serviced by our watchmaker
- One-year mechanical warranty
- Includes a handmade leather watch pouch
- Free worldwide Fedex Priority shipping

Our Service

Each vintage timepiece is individually selected and carefully inspected by our team of experts. After we buy a watch it is mechanically inspected and fully checked by our watchmaker. If necessary, the movement will be fully serviced and tested to ensure it is running to our exacting standards.

We will always describe the watch as fully as we can in our sales texts. Our zoomable images are of the highest possible quality and form an important part of each watch’s description. We will never hide or cover up any element of any watch we sell.

Key to our unparalleled service is Fedex Priority shipping, fully insured. Once you have received your watch, we encourage you to inspect it thoroughly. If you are not 100% satisfied, please let us know. We offer a 14 days return policy. Simply return the watch to get a full refund of the original purchase price.

Our Warranty

We offer a one-year warranty on the mechanical function of the watch, starting from the day of purchase. We do not guarantee the waterproof nature of any (vintage) watch, unless expressly made in writing. Therefore, our warranty will not cover any damage done to the case and/or movement by water or moisture entering the watch. Our warranty does not apply to accidental damage or mishandling of your watch and does not extend to the bracelet, case parts (including pushers, winding stem, crown and bezel), watch glass, dial and hands.

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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