Patek Philippe. An 18K gold waterproof wristwatch with black dial
Patek Philippe. An 18K gold waterproof wristwatch with black dial

SIGNED PATEK PHILIPPE, GENEVE, NO. 1171204, REF. 3520, CALATRAVA MODEL, CIRCA 1975

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Patek Philippe. An 18K gold waterproof wristwatch with black dial
Signed Patek Philippe, Geneve, No. 1171204, Ref. 3520, Calatrava model, circa 1975
With nickel-finished lever movement, 18 jewels, Gyromax balance, free sprung regulator, movement stamped twice with the Seal of Geneva, black matt dial, the circular water-resistant-type case with screw back (No. 2710069 Ref. 3520), hobnail patterned bezel, downturned lugs, case, dial and movement signed
32 mm. diam.