A fake Patek Philippe 3445 gives itself away in three places: a printed or painted dial that lacks vintage crispness, a case that is gold-plated or light on hallmarks, and a generic automatic movement in place of Patek's own caliber 27-460 M. Because the ref. 3445 is a small, simple Calatrava with a date window and three hands, counterfeiters can imitate its silhouette on a 34 to 35 mm case and a stamped dial far more cheaply than they can copy a complicated Patek.
What Is the Patek Philippe Ref. 3445?
Patek Philippe introduced the reference 3445 around 1961 and produced it for roughly two decades as its entry automatic Calatrava with a date at 3 o'clock. The case measures about 34.5 mm, uses 18k gold in yellow, white, or rose, and closes with a screw-down caseback.
Inside sits Patek's own automatic movement, commonly the caliber 27-460 M, finished with a Gyromax balance and hand-applied decoration. Original watches left the factory on a leather strap, and many were sold as water-resistant dress watches, which is why the caseback still matters for authentication.
How Do You Tell a Fake Patek Philippe 3445 From a Real One?
Dial and Printing
Genuine dials show sharp, even printing with a correctly shaped "Patek Philippe" signature and a clean "Swiss" or sigma mark below 6 o'clock. Counterfeit dials usually look soft, slightly rounded at the edges, or too glossy, and the date aperture often sits a hair too far from the center.
Case, Hallmarks, and Weight
Real 3445 cases carry 18k hallmarks that match the case metal and show consistent depth, not a shallow laser etch. Gold-plated fakes feel light in the hand and often show brass or copper color at lug edges, spring bar holes, and the caseback threads.
Reference and case numbers should be stamped clearly inside the caseback and under the lugs, and they should correspond to one another. Numbers that look dot-matrix etched, misaligned, or freshly cut are a red flag.
Movement
An authentic 3445 runs a Patek automatic movement with engraved bridges, Geneva-pattern finishing, and a Gyromax balance. An ETA 2824 base or a plain unstamped rotor visible through the caseback is enough to end the conversation.
Which Details Are Hardest to Fake?
- Hand finishing on bridges, wheels, and the rotor, which cannot be replicated by a stamped kit.
- Correct engraving fonts on the caseback, including the reference number and the metal hallmark.
- Real 18k gold content, which an XRF test at a jeweler confirms without damaging the case.
Are Many "Fakes" Actually Frankenwatches?
Yes. A large share of problem 3445s are frankenwatches: genuine mid-case and movement paired with a refinished dial, a substituted caseback, or incorrect hands. These pass a visual check but fail once the serial numbers are compared against Patek records.
What Should You Do Before Buying?
- Request an Extract from the Archives from Patek Philippe, which confirms the reference, movement number, and case metal.
- Have an independent watchmaker open the case and photograph the movement and inner caseback.
- Compare every stamp, font, and hallmark against documented examples from auction catalogs.
A 3445 without papers or verifiable numbers is a project, not a bargain. Authenticated examples from established auction houses cost more because the verification has already been done.