Patek Philippe Aquanaut 5065/1A-010, "Jumbo", Steel

This example, the ref. 5065/1A-010, is a variant of the 5065A, launched shortly after the initial limited references, featuring an updated 315 SC calibre and an increased 38mm case diameter (up from 36mm). The ref. 5065A ‘Jumbo’ also uses a sapphire display case-back, replacing the solid steel, seen in earlier versions.

The Aquanaut re-interprets a number of signature design elements from the Nautilus - most notably, the octagonal rounded bezel. It displays a high level of finishing, with brushed surfaces on the case front, and polished, bevelled edges. The steel, three-piece case provides water resistance up to 120m, further featuring a screw-down crown.

The black checkerboard dial has tritium-filled index markers and is embossed with silver applied numerals, and matches the texture on the rubber strap.This example, as a ref "-010", is fitted with Patek's stainless steel Aquanaut highly-polished bracelet, a faceted design that is in part functional, and part jewellery. It also comes with a pre-cut, grey, tropical strap. 

The movement inside the reference 5065A is the self-winding calibre 315 SC, first used in 1984. It features 29 jewels, a straight-line lever escapement, shock absorber mechanism, a self-compensating flat balance spring and a monometallic balance, adjusted to cold, heat, isochronism and 5 positions. Furthermore, the solid-gold rotor is finished in classic Patek Philippe style, with circular Geneva stripes.

This Patek Philippe 5065/1A-010 Aquanaut is accompanied by its Certificate of Origin, dating its sale to 2013. This was not uncommon for the time, as unlike today, the reference was not particularly collectible and pieces manufactured several (or more) years earlier, remained in stock. 

Viewings can be arranged in Central London by appointment.

Closer look

Brand:	Patek Philippe
Model:	Aquanaut Ref. 5065/1A-010
Movement:	mechanical, automatic-winding calibre 315 SC
Functions:	date, hours, minutes, centre seconds
Features:	display back, tritium index markers, unrestored dial, Arabic numerals, stainless steel bracelet, grey tropical strap
Case:	38mm stainless steel
Crystal:	sapphire front and display back
Bracelet:	Patek Philippe grey composite strap, stainless steel bracelet and deployant clasp
Year:	6th September 2013
Box & papers:	Certificate of Origin