Released in 1976, the reference 3700/1 embodies every aspect of Patek Philippe's avant-garde design philosophy of the 1970s, from the bold yet elegant curves, to the contrasting finish of the case, and even the delicate grooves of the dial culminating in a sublimely robust and elegant wristwatch. Advertisements from the era trumpeted the Nautilus' status as one of the most expensive steel wristwatches, and proclaimed "Like the great swords of another age, Nautilus took shape between the skilled hands of master craftsmen." Evidence suggests that of all Genta's iconic designs, the Nautilus was his favorite and he perhaps regarded it as his most timeless.

Owing to a thinner caliber, the 3700/1 retains a slimmer profile than its 21st century descendent, the 5711/1A, introduced on the 40th anniversary of the 3700 in 2006. The caliber 28-255 within was based on the legendary Jaeger-LeCoultre JLC 920, heavily modified by Patek Philippe. At the time it was the world's thinnest automatic movement with date, measuring only 3.05mm thick.

The "Jumbo" moniker refers to the 42mm case, which was certainly oversized for the era. While it was initially not well received, its popularity quickly grew, and has been a mainstay of Patek Philippe's collection until the present day. Recently serviced by Patek Philippe in 2021 and fitted with a new old stock dial, it’s a lovely vintage example of a coveted Nautilus that can be enjoyed on a daily basis.