---
title: "Cartier Santos Octagon 25mm Steel & 18ct Yellow Gold 187903"
type: "product"
brand: "Cartier"
model: "Santos Octagon"
reference: "187903"
price: 2495
currency: "GBP"
condition: "Pre-owned"
year: ~
category: "Watches"
subcategory: "Cartier"
availability: "Contact Us"
url: "https://thediamondbox.co.uk/product/cartier-santos-octagon-steel-gold-25mm-rol5634-cartier"
image: "https://thediamondbox.co.uk/uploads/original_image/55c9a02466e1d6715f1b260373287e42.png"
updated: "2026-02-26"
---

# Cartier Santos Octagon 25mm Steel & 18ct Yellow Gold 187903

## Price

**£2,495** (Finance available from £117.37/month)

## Description

This Cartier Santos Octagon 25mm features a white dial with roman numerals and a stainless steel bracelet. It also features a 18ct yellow gold octagon shape bezel.In the early 20th Century, Louis Cartier introduced a bold geometric style at the company founded by his grandfather half a century earlier. The Santos Octagon is the perfect example. The classic Cartier Santos was designed in 1904 by Louis Cartier for his friend, the Brazilian aviation pioneer, Alberto Santos-Dumont.This watch has been checked against technical records to guarantee authenticity and clean history. Comes with a TDB travel case.Ref: 187903

## Specifications

| Specification | Value |
|---------------|-------|
| Brand | Cartier |
| Reference Number | 187903 |
| Year | NA |
| Condition | Pre-owned |
| Date on card | NA |
| Watchfinder condition rating | Vintage |
| Location | NA |
| Serial | 080717824 |
| Model | Santos Octagon |
| Papers | No |
| Box | Authentic Box |
| TDB Limited Lifetime Warranty | Yes |
| Case Size | 25mm |
| Strap design | Steel and Yellow Gold |
| Material | Steel & Yellow Gold |
| Bezel material | 18ct Yellow Gold |
| Dial Colour | White |
| Movement | Quartz |
| Gender | Ladies |
| Bracelet Size (cm) | 16 |
| Certified | Yes |
| Keywords | Cartier, Santos, 2966, Cartier octagon, Cartier, Cartier, unworn Santos for sale, 2021 Santos, unworn Cartier for sale, watches london, santos 100, ice watches, ice cartier, santos, diamond w |

## About The Diamond Box

The Diamond Box is North London's distinguished destination for luxury watches and gold jewellery since 1997. Visit us at 114 Ballards Lane, N3 2DN, London or call 020 8838 3655.


[View this product on our website](https://thediamondbox.co.uk/product/cartier-santos-octagon-steel-gold-25mm-rol5634-cartier)