Cartier Tank Concord Pre-Must ref.3660 de 1970s

The "Must de Cartier" concept emerged in 1973 when two men came together to think of a creative solution to revive Cartier, Robert Hocq and Alain-Dominique Perrin.
In the late 1960s and early 1970s, Cartier experimented by developing brass and steel models with gold plating for the production of this new line of affordable watches. The result was a series of watches designed with a lot of creativity and extremely limited production called "Pre-Must". Among these pieces is this small Tank Concord, a square watch with a lot of personality and heritage from the brand.
Brand: Cartier
Model: Tank Concord
Reference: 3660
Year of Manufacture: 1975
Serial Number: 5512115
Material: 20-micron gold sheet
Dimensions: 23x30mm
Crystal Material: Mineral crystal
Luminescent Material: No
Caliber: ETA 2512 Cartier caliber 78-1
Type of Mechanism: Manual winding
Strap Size: 15mm
Strap: Camille Fournet crocodile leather
Box/Papers: No
Mechanical Functioning Guarantee: 6 Months
Comments: aesthetic details on the watch case, this piece underwent a thorough mechanical service.

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