百达翡丽，不锈钢自动上弦链带腕表，配中心秒针、日历显示及动力储存，NAUTILUS，型号3710/1A-001，约2001年制，附原厂证书、盒子及外包装

Reference 3710⁄1, launched in 1998, is the first “Jumbo” Nautilus produced since the legendary reference 3700 which was first produced in 1976. When launched, the Nautilus model was advertised as the most expensive steel watch on the market. The main difference between reference 3700 and 3710⁄1 is the addition of the sweep centre seconds and a power reserve indicator. Reference 3710⁄1 was discontinued in 2006.
Ref.3710 is illustrated in the 'Blue Book 4', 2020 edition by Eric Tortella, page 470