Introduced in 1949-1950, the 12-400 is the known successor to Patek's famous 12-120 calibre.

While maintaining the essential architecture, the 12-400 incorporated several critical improvements, including a redesigned regulator system enhancing the overall reliability. These refinements elevated the movement from a delicate dress-watch caliber into a far more versatile platform, capable of meeting the rigors of mid-century wristwatch use.

Patek Philippe produced fewer than 100 to around 600–1,000 total pieces (including related variants like the 3418 A and 3419) that were manufactured between 1958 and 1962.

• First Series (1958–1960): Approximately 200 pieces made (using the calibre 12-400 or calibre 12-AM 400 movement).

• Second Series (1960–1962): Approximately 400 pieces made (using the calibre 27-400 or calibre 27-AM 400 movement).

Brand:

Patek Philippe

Made:

1960

Model:

Calatrava

Reference:

3418

Calibre:

12-400

Movement:

Manual

Material:

Stainless steel

Features/complications:

Antimagnetic movement

Dial:

Silvered dial featuring outer minute track with applied mirror polished baton shaped hour indices with Baton hands and sub-seconds dial

Case dimensions:

34mm

Bracelet/strap:

Stainless steel bracelet

Accessories:

Extract from the Archives

SKU:

3536

Burlington Arcade · Mayfair, London