Omega 300 Seamaster ‘Big Triangle’ 1967 – Extract from Archives

Gorgeous example of the legendary ‘big triangle’ Omega Seamaster 300, accompanied by its Extract from the Archives. Scroll down to read more about this rare bird.



This present example remains in unrestored and very well taken care of condition.
The matte black dial with large tritium luminous hour markers shows a subtle spotted patina across. Stunning  ‘sword’ hands with the same desirable yellowish aged tritium lume.
The dial signature and writing has turned into an attractive smokey white colour.
Note that the centre of the dial shows a hardly visible spot/mark.


The large uni-directional bakelite bezel remains in very good condition without any major cracks or discolorations.
Original ‘naiad’ Omega crown with large gasket for keeping out water (noticeable while winding the watch).

The strong and heavy case looks to be unpolished, some normal signs of wear but nothing unusual.
Case back writing and image of the Omega Hippocampus still clearly legible.

The automatic Caliber 552 movement is clean and runs with fine accuracy.

Please note that the case back received a new gasket (not present in the pictures).

The watch is accompanied by the Extract from the Archives indicating this watch was delivered to Argentine back in August, 1967.


Please note we handle an 24 hour purchase/shipment processing policy as all our watches are located in a bank safe.

Feel free to contact us if you have any questions, require more pictures/information or if you would like to know our guarantee and return policy.

We thank you in advance for your interest in our beloved watches here at Mokum Watches in Amsterdam.

Additional information






Stainless Steel


41mm / 43mm




Cal. 552