The 1665 Sea-Dweller with ‘Qaboos’ dial that was made for the Sultan of Oman in around 1973. Photo: Christie's
The 1665 Sea-Dweller with ‘Qaboos’ dial that was made for the Sultan of Oman in around 1973. Photo: Christie's

Rare Rolex watches commissioned by late Sultan of Oman sell for $3.5 million