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Certified Pre-Owned Watch Program

Vintage Omega Ploprof Seamaster 600 Blue Dial Ref.1660077 166.077 Diving Watch

Regular price $0.00

Out of stock

Own Part of history with this watch.  

Developed in conjunction with Comex and the legendary Jacques Cousteau, Omega conceived and developed what was probably the first waterproof watch designed and built solely for the diving professional. The watch took 4 years to come to the market after extensive testing and arrived in 1970.

The nickname ‘Ploprof’ derives from the French words ‘Plongeur Professionnel’ meaning : professional diver. After the success of the Seamaster 300, Omega (on request by Comex) wanted to make an even more reliable and waterproof wristwatch. This Seamaster 600 (waterproof to 600m) first saw light in 1970, 4 years after they started the production. The watch has been in production for 9 years and due to its high costs back in the days (twice the price of a Rolex Submariner) only top professional divers went for the Ploprof. Probably Omega lost more money in the process of developing this watch thank making money in the sales, but they also used this exact model to advertise their mechanical abilities. 

Two features in particular are quite innovative: Firstly the locking mechanism on the winding crown and secondly the bezel that can only be turned when the distinctive big-red button is pressed. 

Omega re-issued the Ploprof in 2009 because the rugged and typical 70s look and rich history gave this diver a real cult-status. Given the scarcity one can easily understand the vintage Ploprofs are highly sought-after.  

The watch looks to have a Mark III or Mark 3 Dial also know for as D6,  Bezel B2 based on the lum. This is a very rare for single hand use reverse Bezel release button. to use one hand press the bezel release and move the bezel. I dont recommend it and use two hands. This a later edition dating from 1973, and very limited production time.  

The one we are offering is a very early piece with the red-button on the left side of the case. The dial is really exceptional and the overall case and movement condition is magnificent. This is one of the very few chances you will ever get to purchase a diver like this, especially for this amount. The best companion any diver or watch collector could wish for.


This is one of the most amazing opportunities for watch collectors, to own one of the most iconic diving watches every made. Please read the listing in full, since this is very special. During service at time they would put the movement backwards since this was has a two way movement and can work both ways. This is special due to bezel pusher being upside down.


 Contact me if you have any questions first.




Stainless Steel 

Monobloc case was an innovation at the time,

Case Size

55 mm x 45 mm. Thickness 14 mm.


NA MonoCase front loader, half stem. (This watch was first of it kind to load from top)


UnSigned Screw 




 Diving (Looks to have a 

Bezel B2 based on the lum)


The watch looks to have a Mark III or Mark 3 Dial also know for as D6. Very Clean Blue dial. Luminous numbers dial, beautiful orange hands and amazing bezel, 

Swiss made Mark, with the seconds Hand and date at 3 O'Clock. Please see picture for more detail.


Hour, Seconds, Date, 


Self-Winding Automatic copper-colored,  straight-line lever escapement, monometallic balance, shock absorber, self-compensating flat balance spring.

Movement Notes

NA keeping great time.


Orange ISOFrane.  Please see picture.


Come with Omega service box,  Please see picture.

Reference Number

1660077 / 166.077

Made in


Water Resistance

No, Please pressure test before water use.

Service Level*

3 (see Tab for info)

In-House Time Test Results**

6 s/day This is great time keeping for a watch in this age!




Setting this watch is bit tricky and you need to be very careful pulling the crown out and winding. Since it has split stem which can come off or get damaged. This is an special offering and please read all the description and ask question.



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