jewel ’s upcoming watch sale in New York will be a collaboration with Beverly ##ton - based high - end vintage watch dealer The ##tone . Christie ’s Watches Online : The Keystone collection will offer what mark Gruenberg , one of The Keystone ’s founders , describes as " a curated collection of timepieces appropriate for today ’s market " . its highlight is an 18-ct gold Rolex GMT - Master SARU , set with diamonds , rubies and sapphires , estimated at between $ 280,000 and $ 5000 .
Christie’s upcoming watch sale in New York will be a collaboration with Beverly Hills-based high-end vintage watch dealer The Keystone. Christie’s Watches Online: The Keystone Collection will offer what Justin Gruenberg, one of The Keystone’s founders, describes as "a curated selection of timepieces appropriate for today’s market". One highlight is an 18-ct gold Rolex GMT-Master SARU, set with diamonds, rubies and sapphires, estimated at between $280,000 and $320,000.