1957 Rolex Oyster Perpetual Datejust "Thunderbird" 18k Yellow Gold Double Signed Serpico Y Laino Swiss only dial 6609The 1957 Rolex Oyster Perpetual Datejust Thunderbird reference 6609 in 18k yellow gold stands as one of the most charismatic mid century executions of the Datejust line, elevated further by its rare double signed dial for Serpico y Laino, the legendary Venezuelan retailer known for commissioning some of the finest special order pieces from Rolex. This example features the distinctive rotating Turn O Graph bezelan aviation inspired design that earned