Patek Philippe 2509 2509 Vintage Calatrava Yellow Gold 27-400AM EXCELLENT (30743)

30743 Patek Philippe 2509 Calatrava with rare anti-magnetic 27-400 caliber, this caliber was very rarely used in this reference, 18k yellow gold case is in excellent condition, the case is full and thick, 18k Patek Philippe vintage tang buckle, the manual wind Patek Philippe caliber anti-magnetic 27-400AM appears to be very bright and in excellent condition, 18 jewels with anti-shock System, the movement is covered by its original dust cover, original silver dial is in excellent condition and is very bright, the Patek Philippe signature is unaltered, applied yellow gold indexes, "Calatrava" style hands, correct unsigned crown, size 35mm, thickness 9mm, Excellent Condition with Patek Philippe archive papers dated January 19th 1966.


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More about Patek Philippe 2509 2509 Vintage Calatrava Yellow Gold 27-400AM EXCELLENT

This is an 18K yellow gold vintage 1960s's Patek Philippe Amagnetic, 2509. It has a leather strap with a matching 18K Yellow Gold tang buckle. The 34.5mm diameter solid two-body dust-proof cap case, downturned lugs, and rounded bezel, are polished. It has a screwed-down solid case back. The dial is silver with applied gold faceted baton hour markers, yellow gold dauphine hands, and an outer minute dot track. There is a constant seconds subsidiary dial at the 6 o'clock position. The 9.5mm thick case, dial, and movement are all signed.

The mechanical manual winding Patek Philippe caliber 27-AM400 movement is rhodium plated, with fausses cotes embellishment, and the Geneva Quality Hall Mark. It's constructed with 18 jewels, a gold lever escapement, a patented Patek Phiippe Gyromax balance adjusted for heat, cold isochronism and 5 positions, and an anti-shock mechanism. It includes a self-compensating Breguet balance-spring, and an anti-magnetic soft iron core.

The Patek Philippe 2509 Calatravas have become increasingly difficult to find in desirable condition. The earliest examples were much smaller, while the 2509 was one of the first larger sized (34.5mm) references created under the new Stern ownership of Patek. It was also one of the first water resistant cases to be introduced.