Audemars Piguet · Royal Oak

5402ST

Known in the trade as the Jumbo.

Gérald Genta sketched it overnight for a 1972 Basel deadline. A steel watch priced above gold ones was considered commercially insane at the time, and AP built only 1,000 of the first A-series to spread the risk. It saved the company and invented the luxury sports watch category outright.

Reference record

Production: 1972–1984
Model: Royal Oak
Case material: Stainless Steel
Case size: 39mm
Movement: Automatic
Calibre: Cal. 2121
Dial colours: Blue
Market value band: $120k – $280k

Timeline

1972Launched at Basel as the first luxury steel sports watch

Notable

The exposed hexagonal bezel screws are functional, aligned by hand, and pass through to the caseback.
The first 1,000 pieces carry 'A' series numbers, which is where the collector shorthand comes from.

Common questions

When was the Audemars Piguet 5402ST produced?

The 5402ST was produced from 1972 to 1984.

What movement does the Audemars Piguet 5402ST use?

The Audemars Piguet 5402ST runs the Cal. 2121, an automatic movement.

How do I check a Audemars Piguet 5402ST 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 Royal Oak references

5402BA1972 5402SA1977 25594ST1984 256541984 14790ST1992 14802ST1992 15000ST1995 25860ST1997 15202ST2000 15300ST2005 26300ST2005 15400ST2012 15400OR2012 15450ST2012 26320ST2012 26574ST2015 26574OR2015 26331ST2017 15202IP2018 15202OR2019 15500ST2019 15500OR2019 15202BC2019 265792019 15510ST2021 16202ST2021 26240CE2021 26240ST2021 26240OR2021 15202PT2021 26239OR2021 15550ST2022 16202BA2022 16202PT2022 26530OR2022 14800ST 15050ST 15302ST 15303BC 15303ST 15400IP 15400CE 15450OR 15454ST 15500IP 15502ST 16202IP 25954SK 15510OR 15510BA 15510BC 16202OR 16204PT 15300OR 15551ST 26331OR

Checking a specific Audemars Piguet? Look up its serial number in the registry.

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5402ST

Known in the trade as the Jumbo.

Reference record

Production: 1972–1984
Model: Royal Oak
Case material: Stainless Steel
Case size: 39mm
Movement: Automatic
Calibre: Cal. 2121
Dial colours: Blue
Market value band: $120k – $280k

Timeline

1972Launched at Basel as the first luxury steel sports watch

Notable

The exposed hexagonal bezel screws are functional, aligned by hand, and pass through to the caseback.
The first 1,000 pieces carry 'A' series numbers, which is where the collector shorthand comes from.