SIGNED PATEK PHILIPPE, GENEVE, NAUTILUS MODEL, REF. 3800/1, MOVEMENT NO. 1'420'231, CASE NO. 2'853'608, MANUFACTURED IN 1982

With Patek Philippe Extract from the Archives confirming production of the present watch in 1982 and its subsequent sale on 12 October 1988. The Extract further states that the original case back of the watch was replaced with the present one during a servicing in 1988.

Reference 3800/1 was in production from 1981 until 2006.