What the Rolex 1803 President Is
The reference 1803 is the fourth-generation Rolex Day-Date, a 36 mm watch in solid 18k gold that Rolex introduced around 1959 and kept in the catalog into the late 1970s. It runs the calibre 1555 or 1556, an 18,000 vph, 26-jewel automatic movement with no quick-set function. The day and date change only when you move the hands forward past midnight. The bracelet of the period is the President, reference 7286, which closes with a concealed crown clasp instead of a visible buckle. That combination is what people mean by "Rolex 1803 President," and it is also what replica makers try to copy.
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Prerequisites for an Inspection
- 10x jeweler's loupe
- Digital scale accurate to 0.1 g
- Dial caliper
- UV torch
- Small magnet
How to Tell a Replica 1803 From a Genuine One
- Weigh the watch head. A genuine 18k gold 1803 head sits around 55 to 65 g. Plated brass and steel copies come in far lower.
- Measure the case. Expect 36 mm across the bezel, roughly 20 mm between the lugs, and about 12 mm thick including the crystal.
- Study the dial step. Early 1803 dials are pie-pan style with a raised outer step. Copies usually print flat and get the coronet shape wrong.
- Read the day wheel through the aperture. Genuine discs use crisp serif letters, sit square in the window, and do not bleed at the edges.
- Inspect the movement. Genuine bridges are stamped 1555 or 1556 with 26 jewels and a signed rotor. Most replicas hide an undecorated movement.
- Run a magnet over the case. Solid gold and gold-filled cases do not pull. A plated steel or brass core often does.
- Hunt for hallmarks. Look for the 750 stamp, Swiss assay marks and registration numbers on the caseback, the lug undersides and the clasp.
- Work the clasp. The concealed crown clasp should close with a soft snap and show crisp stamping inside, with end links marked 53.
- Test the setting behavior. With no quick-set, the day and date must roll over only as you pass midnight. A snap-to-date action points to a modern clone movement.
- Compare the crystal. Original 1803 watches use acrylic. Mineral or sapphire glass on a supposed 1970s example is a red flag.
Where Replicas Give Themselves Away
Gold content is the first failure. A 1803 bracelet alone carries real weight, and counterfeiters rarely match it. Bezel flutes on copies look shallow and rounded instead of cut and bright. Engraving on the caseback is often laser-etched rather than stamped, so edges look soft under a loupe. Crown threads feel gritty on copies, and the crown sits too proud or too flush. On the dial, the printing is the giveaway: genuine text has sharp terminals, even spacing and no smudging at the 6 o'clock signature.
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Legal Note
Trafficking in counterfeit watches is a criminal offense in the United States under federal trademark law, and shipments can be seized at the border. Buy a genuine reference or a lawful alternative instead of a copy.
Replica Rolex 1803 President With President Bracelet: Buyer's Guide