1958 Omega Seamaster Automatic (Ref. 2975-4 SC) Cal. 501

The world of vintage Omega Seamasters is vast and filled with interesting and unique references and this ref. 2975-4 SC Omega Seamaster has so many charming elements to it, that is hard to favor just one! The ref. 2975-4 SC is powered by the in-house Omega cal. 501 automatic winding movement, which is a workhorse, like many Omega movements out of this era. The case back is adored by collectors as it features a large hippocampus medallion. The broad lug case gives this watch an excellent wrist presence. But perhaps the most interesting aspect of this Seamaster is its original beads-of-rice bracelet, which features a rare micro-adjust mechanism within its clasp.

Stock # OMSM29754
Brand Omega
Style Seamaster
Model 2975-4 SC
Serial 166XXXXX
Size Men's
Material Stainless Steel
Dial Tropical
Millimeters 35mm 
Bracelet Omega Beads-of-Rice Bracelet W/ Micro-Adjust Clasp



The excellent broad lug-style Seamaster case has been lightly polished in the past and retains symmetrical and thick lugs that show light honest signs of use. The smooth stainless steel bezel is in excellent condition as well showing some signs of use. The Omega signed crown is most likely an early replacement. The case back features the large hippocampus in excellent condition and retains its factory engravings. The rare and original Omega beads-of-rice bracelet features an ingenious ratcheting micro-adjust mechanism within the clasp and remains in excellent condition, showing stretch from use, and retains 19 links.


The non-luminous silver seamster dial has achieved a beautiful and warm vintage patina, showing normal signs of aging. The applied markers are in wonderful condition showing no oxidation. The original Dauphine hands are in excellent condition as well showing some light oxidation which is common for this era. 


None. The watch is keeping time and running perfectly, previous service history is unknown.