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Among the Santos-Dumont series, the masterpiece slim model "Extra Flat."
Equipped with Frederic Piguet's Cal. 21, it is a popular model among collectors.
This type comes in two dial variations: a guilloché type and a flat type, and this one is the non-guilloché type.
The non-guilloché type is a very classical and atmospheric piece.
This model is in excellent condition, with the dial particularly well-preserved, making it highly recommended.
The CPCP Santos Extra Flat model from the 2000s was based on this model, with nearly identical size and construction.
The differences are that, while both use Cal. 21, the movement in this model is undecorated, and the guilloché on the dial is more deeply engraved and emphasized.
While both are a matter of preference, if you wish to enjoy the beautiful guilloché characteristic of this era, this model is undoubtedly the one.
The overall condition is very good, suggesting it was kept in a considerably good environment given its age.
The dial has no dirt, cracks, or discoloration whatsoever. There are no noticeable scratches on the glass either.
The case has had almost no polishing. While there are some scratches on the case and bezel, major scratches and dents are quite few.
The edges are also well-defined. The original case condition has been maintained and is in beautiful shape.
《Product Details》
Brand Name: Cartier
Product Name: Santos-Dumont LM Extra Flat
Movement: Hand-wound
Caliber: Cal. 21 Frederic Piguet
Material: K18YG
Model Number: 8210
Serial: 960540###
Colors: Silver, Gold
Case Diameter: Approximately 27mm (width) x 36mm (length), up to 17.5cm wrist size
Buckle: 18kYG Genuine
Strap: New aftermarket
Accessories: Our warranty card
Maintenance is available at our store even after purchase.
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Things to Confirm Before Purchase
If you would like the bracelet-style wrist size adjusted, please contact us in advance. Additional links may be purchased for an extra fee, subject to availability.
As these are vintage items, care instructions vary by product. If you have any questions, please contact us individually.
This is an important purchase for you.
Please check our Frequently Asked Questions page.
Including shipping and insurance: 38,000 (JPY) Additional customs duties may apply. Please check the additional charges in advance before placing your order. Under Japanese law, crocodile exotic leather cannot be shipped. We can change it to cowhide for shipping. Please contact us for details.
ANTEの安心サポート
We carefully select and service each watch to ensure that you can use it with as much peace of mind as possible.
However, precisely because these watches have stood the test of time, they also have characteristics that differ from those of modern new watches.
We hope you will enjoy these qualities as well.
Because these vintage pieces have been treasured and passed down over the years, we carefully inspect their interiors and verify their authenticity.
We ship items domestically and internationally.
Once your order has been shipped, you will receive a tracking number.
First-time online shoppers can use our service with confidence.
In Tokyo’s Ginza district, you can view the items you’re considering in person.
Ante excels at providing consultations and guidance tailored to each customer’s individual needs. Please feel free to contact us about the situations in which you plan to use the product or any concerns you may have when making your purchase. We are happy to answer a wide range of questions, including the product’s benefits and points to note.




