Back in January 2015, we brought you the news fresh from the SIHH 2015 in Geneva regarding the launch of the Audemars Piguet Royal Oak ref. 15400SR.OO.1220SR.01 'Two-Tone'. Today, we bring you our usual live images with as many macro shots as possible so you can see its beauty for yourself. This Royal Oak needs like introduction as we reviewed its stainless steel predecessor here. The new Audemars Piguet Royal Oak 'Two-Tone' powered by the in-house automatic calibre 3120 is fitted with the largest case ever made on a Royal Oak measuring 41 mm in diameter. This novelty marks the return of one of our all-time favorite Royal Oaks phased out in the 1990s and originally launched under reference 5402SA as a 'Two-Tone' Royal Oak Jumbo in 1976. The Audemars Piguet Royal Oak Jumbo 'Two-Tone' ref. 5402SA was only produced for a few years and only 951 were ever created.