Audemars Piguet Royal Oak Offshore Chronograph "Tropical Yellow" ref.25770ST from 1997

In 1997 during Baselworld Audemars Piguet surprised everyone with eight colorful prototypes of the Royal Oak Offshore Chronograph to celebrate the 25th anniversary of the launch of the Royal Oak.

At that time, the Royal Oak Offshore ref. 25721ST had just been released in 1993 and four years later a new case design ref. The 25770ST was launched with eight colorful and eye-catching dials that left everyone in awe.

The new models were literally a rainbow of colors including yellow, orange, apple green, bright red, turquoise, burgundy/brown, lavender and blue.

Brand: Audemars Piguet
Model: Royal Oak Off Shore Chronograph
Reference:
Year of Manufacture: 1996
Serial number: 72X E Series
Material: Steel
Dimensions: 42mm
Crystal Material: Sapphire
Luminescent Material: Luminova
Movement type: Automatic 2226/2840
Strap: After Market Shark Leather 
Box/Papers: Watch only
Mechanical Operation Guarantee: 6 Months

Comments: The watch underwent general  service.