Size Guide
Choosing the perfect ring size is an essential part of the Hardy Brothers experience.
Our guide below will help you find the most accurate fit, ensuring comfort, elegance, and a seamless expression of luxury.
| Australian Size | Inside Circumference (mm) |
|---|---|
| H | 46.0 |
| H ½ | 46.6 |
| I | 47.2 |
| I ½ | 47.9 |
| J | 48.3 |
| J ½ | 49.3 |
| K | 49.6 |
| K ½ | 50.3 |
| L | 50.5 |
| L ½ | 51.5 |
| M | 51.8 |
| M ½ | 52.5 |
| N | 53.1 |
| N ½ | 53.8 |
| O | 54.5 |
| O ½ | 54.8 |
| P | 55.7 |
| P ½ | 56.4 |
| Q | 57.1 |
| Q ½ | 57.6 |
| R | 58.4 |
| R ½ | 59.1 |
For the most precise fit, we invite you to visit a Hardy Brothers boutique where our specialists will personally measure your finger and ensure your chosen piece is crafted to perfection.

Hardy Brothers uses standard Australian ring sizes.
| Australian Size | Inside Circumference(mm) |
| M 1/2 | 55.7 |
| N | 57.0 |
| N 1/2 | 58.3 |
| O | 59.6 |
| O 1/2 | 60.9 |
| P | 62.2 |
| P 1/2 | 63.5 |

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Subtract the case size of the timepiece from your wrist measurement
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Enquire about Baume & Mercier Riviera Automatic 42mm Watch M0A10658
Details
| Vendor | Baume et Mercier |
| Metal | Stainless Steel |
| Case Diameter |
Product Details
The Baume et Mercier Riviera 10658, which asserts a GMT complication, sports a dodecagonal steel case and is topped with a silver dial in a sun-satin finish with wave decoration. Both classic and casual, this Riviera has a sapphire back and is mounted on an interchangeable steel “Fast Strap”.
The Riviera 10659 and 10658 are travel watches that feature a fourth hand so the wearer may instantly read the time in a second time zone. This red central fourth hand rotates around the dial every 24 hours, precisely indicating the time in the travel destination on an understated, peripheral hour scale. The two new Riviera GMT watches are available in two versions. Technically flawless and water-resistant to 100 meters, these two new timepieces embody the Brand’s vision of today’s watchmaking while fulfilling the expectations of the most exacting globetrotters.



























