Since its introduction in 1956, the Rolex Day-Date has occupied a unique position in the world of luxury watchmaking. As the first self-winding, waterproof chronometer wristwatch to display both the day of the week written in full and the date, it combined technical innovation with an unmistakable sense of prestige. Produced exclusively in precious metals, the Day-Date quickly became associated with political leaders, royalty and influential figures around the world, earning its enduring nickname, the President. Its distinctive three-piece President bracelet, introduced alongside the original model, became an integral part of its identity. The arrival of the ref. 18038 in 1978 marked an important evolution of the collection, introducing a sapphire crystal and the new calibre 3055 with a quickset date function. While retaining the classical 36mm proportions and fluted bezel of its predecessors, the reference brought meaningful technical improvements to one of Rolex's most recognisable designs.

Dating to 1979, this Rolex Day-Date ref. 18038 is particularly significant for its champagne dial bearing the signature of Sultan Qaboos bin Said Al Said of Oman. Having come to power in 1970, Sultan Qaboos embarked upon an ambitious programme of modernisation, transforming Oman's infrastructure, education and international relationships. During his reign, specially commissioned watches from manufacturers including Rolex and Patek Philippe became an important part of the Sultan's tradition of diplomatic and personal gift-giving. Watches bearing his signature, the Omani Khanjar emblem or other royal insignia have subsequently become a fascinating collecting category, connecting exceptional Swiss watchmaking with the history of the Sultanate. This example combines the distinctive Qaboos signature with diamond-set hour markers, an 18K yellow gold Oyster case and a matching President bracelet.