The Patek Philippe 3445 is a 34 mm automatic Calatrava with a date window, produced from 1961 into the late 1970s and powered by the caliber 27-460 M. It was the first serially produced Patek Philippe automatic with a date, which is why the reference still draws attention from collectors. Replica 3445s are far less common than copies of the Nautilus or the Aquanaut. A small, thin, three-hand case with a gold rotor and a densely printed vintage dial is hard to copy in a way that holds up on the wrist, so most watches sold as a 3445 replica are either a generic Calatrava-style case with a printed dial and a modern third-party movement, or a vintage watch assembled from a mix of genuine and aftermarket parts.
The Reference in Short
- Case: round Calatrava case, roughly 34 mm across, 18 mm lug width, in yellow, pink, or white gold, with a small number in stainless steel.
- Movement: caliber 27-460 M, automatic winding, gold rotor, 37 jewels.
- Dial: applied gold baton markers, printed signature, date aperture at 3 o'clock.
- Production: 1961 into the late 1970s, with small running changes along the way.
How to Check a Replica 3445
- Measure the case with calipers. A true-to-spec 3445 sits near 34 mm across and about 9 to 10 mm thick. A 38 mm case with the same dial layout is a different watch wearing a borrowed look.
- Ask for a clear photo of the movement before anything else. The 27-460 M has a distinct bridge layout and a gold rotor with the Calatrava cross. An ETA 2892 or a Chinese 2824 inside tells you the watch is a modern build in a vintage costume.
- Compare the dial under magnification. Applied markers on an original have beveled edges and sit above the surface. Printed markers, flat paint, or a signature that drifts off center are the usual giveaways.
- Study the case engraving and hallmarks. Gold 3445 cases carry Swiss assay marks, a reference number, and a movement serial. Copy cases tend to show shallow laser etching, a wrong font, or nothing at all.
- Check the date wheel and aperture. The window should be crisp, correctly centered, and framed by the dial, not cut into it. Compare the numeral font against auction photographs of documented examples.
- Match the dial variant to a real example. Use auction archives to find a 3445 with the same marker style, hand shape, and text layout. If no photographed example matches, the dial is likely a redial or a fabrication.
- Ask the seller in writing whether the watch is a replica, a franken build, or genuine. A seller who avoids the question is telling you something.
- Confirm the return window and the payment method before you pay. Card or escrow protection matters more than any claim on a listing page.
Red Flags
- A gold case offered at a price that no gold case can reach.
- Claims of 1:1 or perfect replication. No replica of a 1960s Patek case profile meets that bar.
- No movement photographs, or photographs that show a different watch than the one for sale.
- Stock images used in place of photos of the actual item.
- A story about the watch coming from an estate or a relative instead of a documented source.
Legal and Practical Notes
In the United States, selling counterfeit goods that carry a protected trademark is illegal, and imported counterfeits are subject to seizure by U.S. Customs and Border Protection. Owning a replica is a separate matter from selling or importing one, and the two should not be confused when you are deciding what to do with a watch you already have.
One more point on value. The 3445 is a small vintage dress watch with a modest following. A replica of it will not hold value, will not be serviced by the brand, and will be difficult to resell without disclosure. If the appeal is the look, a modern homage with its own name on the dial gives you the same silhouette without the trademark problem.