PATEK PHILIPPE NAUTILUS. REF. 3800/1A-001. SOLD ON DEC. 29, 1986 Steel medium size wristwatch. CASE: steel wing cushion. Solid back. Dial: blue wired (service) with applied indexes and luminescent hands, central seconds and black date window at 3 o'clock. MOVEMENT: self-winding, cal. 335 SC, stamped with the Patek Philippe hallmark. STRAP: steel with folding clasp decorated with the Calatrava Cross (service). Dial, case and movement signed. Numbered 1'425'729/2'826'749. DIAM. 38 mm. WITH: case, certificate of origin, one additional link, Patek Philippe service invoices dated 2004 and 23 May 2023 (watch under warranty until 23 May 2025). Provenance: First owner. Condition report on request. Condition report on request. A stainless steel self-winding nautilus by Patek Philippe, sold in 1986.