*NOS* 1950s Croton 'Clamshell' Chronograph | Two-Tone Dial | 35mm

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As the story goes, in 1936, Schmitz Frères et Cie of Grenchen filed a patent (No. 189190) for a three-piece watch case, where the movement is encapsulated in a steel “Clamshell”, It consists of a three-part case, one part fitted over a unique flared crystal, pressed to the center body, those two parts are then clamped together and screwed down at four different points under each lug. This was a revolutionary design adopted by a few brands and now they are among the most sought-after chronograph designs.

Croton Watch Company Inc. was established in the year 1878 and since then the family is continuously running the business. Croton Watch Company Inc. is operated from New Jersey, USA.

This two-tone piece is in unbeatable condition, it was stored in a box for decades and now after a full service is as good as it was when new.



This watch is in new old stock condition, the case is very sharp and retains its original lines. The two-tone dial is very clean, in the center area we see a vertical brushed texture, and the outer circle is in gloss polish. It has a few small spots of aging almost unperceivable in the top register near the center.
The hands are heated-blue in nice condition with some aging.

At a close inspection, we can see a few micro scratches probably from being on a drawer for a long time.

The watch has just been fully serviced and keeps a great time.


Maker: Croton
Year: 1950s
Movement: Cal.380, based on Valjoux 77
Material: Stainless Steel
Dimensions: 35mm diameter; 12.5mm thickness
Lug width: 18mm
Crystal: Original Plexiglass
Lume: Yes, Tritium
Bracelet/Strap: New SS vintage-styled bracelet.
Box/Papers: Non

-This watch was photographed on a 6.9 inch / 175mm wrist.

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