Patek Philippe · Nautilus

3700/1A

Known in the trade as the Jumbo.

Gérald Genta's Nautilus, launched in 1976 with a case shaped after a ship's porthole and its hinges. At 42mm it was enormous for the era, hence 'Jumbo', and Patek's advertising leaned into the audacity of a steel sports watch priced like a gold dress watch.

Reference record

Production: 1976–1990
Model: Nautilus
Case material: Stainless Steel
Case size: 42mm
Movement: Automatic
Calibre: Cal. 28-255 C
Dial colours: Blue
Market value band: $120k – $280k

Timeline

1976Launched as Patek's first steel luxury sports watch

Notable

The case is built in two pieces with side 'ears', not a conventional caseback — a construction that made it water resistant without a screw-down back.

Common questions

When was the Patek Philippe 3700/1A produced?

The 3700/1A was produced from 1976 to 1990.

What movement does the Patek Philippe 3700/1A use?

The Patek Philippe 3700/1A runs the Cal. 28-255 C, an automatic movement.

How do I check a Patek Philippe 3700/1A with Watch Safe?

Look up the watch's serial number in the Watch Safe registry to see whether a record exists or a theft flag is attached. A registry search identifies records for a specific serial; it does not authenticate the watch. Authentication is performed in person by an independent expert authenticator, and Watch Safe records and publishes the result.

Other Nautilus references

3800/1A1981 3710/1A1998 5712/1A2005 5711/1A2006 5712G2006 5980/1A2006 5711/1A-0102006 5711/1G-0012006 5712/1A-0012006 5726/1A-0012006 5980/1A-0012006 3711/1G2006 5980R2008 5980/1R2008 5726/1A2010 5726A-0012010 5711/1R-0012012 5711/1A-0112012 5990/1A2014 5990/1A-0012014 5711/1R2015 5711/1P2017 5740/1G2018 5990/1R2019 7118/1A2019 5711/1A-0142021 5712/1R2022 5811/1G-0012022 5811/1R-0012023 3900 5711/1G 5712A 5712R 5726A 5980G 7011/1A 7018A 7021A 7041R 3800/1J 5712/1G 5811/1G 5980/1AR 7010/1R 7018/1A 7118/1200A

Checking a specific Patek Philippe? Look up its serial number in the registry.

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3700/1A

Known in the trade as the Jumbo.

Reference record

Production: 1976–1990
Model: Nautilus
Case material: Stainless Steel
Case size: 42mm
Movement: Automatic
Calibre: Cal. 28-255 C
Dial colours: Blue
Market value band: $120k – $280k

Timeline

1976Launched as Patek's first steel luxury sports watch

Notable

The case is built in two pieces with side 'ears', not a conventional caseback — a construction that made it water resistant without a screw-down back.