百達翡麗，18K金鑲鑽石自動上弦鏈帶腕錶，配中心秒針及日曆顯示，NAUTILUS，型號3800/3，1991年製，附後補證書

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.