百达翡丽，18K金镶钻石自动上弦链带腕表，配中心秒针及日历显示，NAUTILUS，型号3800/3，1991年制，附后补证书

Reference 3800 was in production from 1981 until 2006 and available in different versions. It pays homage to the original Nautilus reference 3700 with a similar design and aesthetic except in a smaller size case and with the addition of a centre seconds hand made possible by the introduction of cal. 335 SC.