Heritage Narrative

Launched in 1961, the reference 3445 was Patek Philippe’s first automatic wristwatch produced in regular series to feature a date display. Its heart is the Calibre 27-460 M—an evolution of the firm’s inaugural self-winding movement—adding a quick-set calendar while preserving the meticulous hand-finishing that defines earlier Calatravas. Collectors often view the 3445 as a transition piece bridging mid-century, manually wound dress watches and the more technically ambitious offerings of the 1970s: it retains the minimalist Calatrava aesthetic while introducing a practical date function and a 37-jewel, Gyromax-equipped automatic drivetrain. With an 18 ct yellow-gold case, plexiglass crystal, and a refined small-seconds sub-dial, this circa-1971 example represents a pivotal era in Patek Philippe’s history—where discreet luxury met innovative mechanics.

Collectability:

GOLDAMMER

Technical SpecificationsBrand / Model:

Patek Philippe Calatrava

Reference / Case No.:

3445 / 331901

Year (Est.):

1971

Condition:

Very good vintage condition

Certificate / Box:

Heritage Timepieces certificate of authenticity (no original box/papers)

Case Size:

35 mm, 18 ct yellow gold, snap-back, signed crown

Movement:

Patek Philippe Cal. 27-460 M, automatic, 37 jewels, Gyromax balance, 21k rotor

Dial / Crystal:

Silvered dial with applied baton markers; date at 3 o’clock; small-seconds at 6; plexiglass crystal

Strap / Buckle:

Dark brown alligator leather strap with gold-plated pin buckle

Warranty:

Not covered by factory warranty; service warranty available through Heritage Timepieces

Condition & Inclusions

Overall Grade:

Very good – lugs and hallmarks remain sharp; only light hairlines visible.

Dial & Hands:

Original, with evenly distributed patina.

Movement:

Running within vintage tolerances; amplitude and rate last checked May 2025.

Scope of Delivery:

Watch as described, plus Heritage Timepieces certificate of authenticity.