Audemars Piguet Royal Oak Offshore “Half-Brick” Chronograph – 18kt Rose Gold RARE Ref. 26170OR.OO.1000OR.01

The Audemars Piguet Royal Oak Offshore “Half-Brick” 26170OR.OO.1000OR.01 is a bold and rare timepiece within the Offshore family, instantly recognizable by its powerful case design and distinctive dial layout. Nicknamed the “Half-Brick” by collectors for its robust stance and unique proportions, this model is crafted entirely in 18kt rose gold, making it one of the most luxurious iterations of the Royal Oak Offshore.

The watch features a 42mm 18kt rose gold case, complemented by the Offshore’s signature octagonal bezel secured with eight hexagonal screws. Measuring approximately 14.2mm thick, the case carries a strong presence while maintaining wearability.

The pushers and crown are coated in black rubber, providing contrast against the warm rose gold case, while the black leather strap adds a classic finishing touch. A sapphire crystal protects the dial, and the solid caseback ensures durability. The watch offers water resistance up to 100 meters, keeping in line with the Offshore’s sport-luxury DNA.

The “Half-Brick” Offshore is considered rare and highly collectible, especially in full 18kt rose gold. Its nickname highlights its substantial weight and presence, making it a standout piece for connoisseurs of bold and luxurious sports watches. 

The silver-toned Mega Tapisserie dial sets the stage for its bold black Arabic numeral hour markers. Three chronograph sub-dials are symmetrically arranged, with:

12-hour counter at 6 o’clock

30-minute counter at 9 o’clock

Small seconds at 12 o’clock

A date window at 3 o’clock, visible through a magnifier integrated into the dial, completes the display. The contrasting black numerals and hands provide exceptional legibility against the bright dial.

Inside beats the Audemars Piguet Caliber 3126/3840, a self-winding chronograph movement based on the in-house Caliber 3120 with a Dubois-Depraz chronograph module.

Key technical details include:

Movement: Caliber 3126/3840

Functions: Hours, minutes, small seconds, date, chronograph

Power Reserve: 50–60 hours

Frequency: 21,600 vph (3 Hz)

Components: Over 365 parts, with 59 jewels

Finishing: Hand-finished bridges with Geneva stripes, beveling, and a 22k gold engraved rotor

This movement combines the robustness required for a sports chronograph with the haute horlogerie finishing AP is known for.

CASE SIZE:

42mm

CONDITION:

This Timepiece is in an Unworn Condition Complete with Box & Papers Accompanied with a full Two-Year Warranty from Date of Purchase and a Full Value Appraisal