Omega Seamaster Ploprof 'The Grand' 166.093

Omega Seamaster Ploprof 'The Grand' 166.093

In 1971 Omega launched a 1000 meters diving watch which took the name Seamaster 1000m/3300 ft and became the most waterproof watch ever made by Omega and even when tested at depths considerably deeper than it’s rating its water resistance never failed. This incredible watch made in very limited numbers was a milestone in diving watch history.


The Seamaster Ploprof 1000 is an incredibly rare watch to find. Circa 450 were made only according to research carried out. Omega pioneered the 1000m diver's watch with this unique variation of the ‘Flightmaster’ case without a screw back, making it revolutionary in its functional ability at even the most extreme depths. 


Purportedly Prince Rainier III of Monaco commissioned Omega to produce 50 watches other than the common 166.075 Seamaster 600 to give as honoraria gifts to the friends of the Monaco Oceanographic Research Institute and Museum.


Make no mistake, this watch is very rare and seldom seen in original condition.


Brand and Model: Omega Speedmaster Seamaster 1000


Reference: 166.093


Case: Based on the Flightmaster case made from stainless steel by Ervin Piquerez SA (EPSA) with corrct original finish and correct lugs.


Bezel:  Original acrylic based plastic B2 Bezel, 

  • Straight ‘1’ of the ’10’ marker.
  • Thin line triangle marker
  • Stylised lower half of the ‘2’ of the ’20’ marker.
  • Flat topped ‘3’ of the ’30’ marker.
  • Pentagon 10 minute markers.


Bracelet: Omega mesh bracelet stamped 1247/237 with clip in fastener clasp.


Dial: Original blue oval '000s' with tritium markers and Swiss Made in the minute track. First variation of the dial. Two further dails wer made.


Hands: Original extended lume hour hand, minute hand finished in orange with white second hand. Both dial and hands glow constantly.


Crystal: 0.5cm crsytal which is original


Movement: Cal 1012


Case Back: Grooved non-slip flat back


Included with watch:


Watch only




The condition of this rare 1000 is good. It does show wear from use and has  possibly been used in diving somewhere throughout its life. Because the watch was air-tight moist air inside the watch would be trapped thereby allowing a corrosive interaction to occur between the brass dial base and the organic paint being used. This produced the dial “bubble effect” with which a large number of watches were afflicted. This is documnted and the dial in this peice proves to be original.