A rare 1999 platinum Rolex Daytona, a one-of-a-kind private commission, could fetch $1.7 million at Sotheby’s as luxury watch ...

The watch is part of a single order of four custom Rolex watches created between 1998 ... 16516 to appear on the block also had a mother-of-pearl dial, but in a rainbow hue with Arabic numerals ...

wearing a custom look ... $54,900 and features Rolex’s signature President bracelet. It has a 40mm 18-karat Everose gold case with a fluted bezel and a chocolate-brown dial set with 10 baguette ...

It was privately commissioned, custom-made for a client — something almost unheard of for Rolex. "It's very unusual ... each with a different dial. The watch heading to the auction block is ...