Omega Seamaster Chronograph ref 143.646 calibre 321 circa 1959


Omega stainless steel Seamaster chronograph ref# 143.646 circa 1959, with popular cailbre 321 movement. Featuring a 35 X 44mm case with screw down case back engraved “Seamaster” and “Waterproof”. With round chronograph pushers, and Omega logo crown. Featuring an exceptionally nice condition original matte silvered dial with applied indexes and Omega logo, and three chronograph registers. This early model is powered by a 321 movement with serial # of 17 million which dates production to 1959. This model features tapered hour and minute hands, as well as tapered chronograph recorder hands, correct for this earlier version.

A great condition, and very desirable early example. Just serviced by one of our veteran watchmakers and offered with a 1 year warranty of accurate timekeeping and operation. Offered on your choice of sporty leather or dressy exotic skin strap.

SKU: 48690 Category:

Additional information


Model Name/Type


Model/Case Ref#


Case Metal

Case mm



Dial & Hands


Movement Type

Date Function

Man's / Lady's


Country of Origin

Box / Papers


Movement Caliber


Strap / Bracelet

Strap / Bracelet Size

Case Serial #


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.