Omega Seamaster 600 Ploprof MKII 1972
Vintage

Omega Seamaster 600 Ploprof MKII 1972

By Bill · Feb 6, 2024 · 23 replies
Bill
WPS member · Omega forum
23 replies4608 views0 photos
f 𝕏 in 💬 🔗

Bill's meticulous examination of the 1972 Omega Seamaster 600 'Ploprof' MKII offers a deep dive into the nuanced characteristics that define this iconic diver's watch. His post highlights specific design elements, such as the C-shape case and 'sandwich' dial, providing invaluable insights for collectors and enthusiasts seeking to understand the authentic configuration of this vintage reference. This detailed analysis serves as a crucial resource for appreciating the historical engineering and design choices behind one of Omega's most robust tool watches.

23 collectors discussing this on the WatchProSite forumJoin the Conversation →

All correct configuration. 

The C shape case - observe the notches near the lock nut which can be seen from the top. Sandwich dial (MKII) the 600 is placed in between the Seamaster and Profession hence sandwich and prone to degrade due to the materials of the base plate reacting to the paint not water intrusion. Non serif bezel observe the "I0" with flat top "3".  Finally the hour hand lume goes all the way to the tip of the hand.  Presented on the original Isofrane rubber strap.

Watch was sold in Ecuador May 31st ,1972 with 320xxxxx mouvement serial.

Tool watches sold to professional divers.

The C shape case was and adjustment to allow clearance for the lock screw to stay free from debris.  It was the second choice after the red plastic lock nut which would lose its threads after some use due to plastic angainst steel.  The story was the divers did not clean the watch after diving and debris (salt corrosion) would cause the lock nut to get stuck.




About the Omega Ref. Seamaster600

The Omega Seamaster Ploprof 600, reference Seamaster600, is a specialized instrument within the Seamaster collection, designed for demanding underwater use. It is distinguished by its robust monobloc case construction and unique crown protection system, setting it apart from other Seamaster models as a purpose-built professional diver's watch. The design prioritizes functionality and durability for extreme conditions.

This specific reference features a substantial case, often constructed from materials chosen for their resilience in marine environments. The movement housed within is an automatic caliber, known for its reliability and precision, providing a practical power reserve suitable for its intended use. The crystal is designed for clarity and resistance to pressure, contributing to the watch's overall water resistance.

For collectors, the Seamaster Ploprof 600 holds interest due to its distinctive aesthetic and engineering. Variants, such as the unique 1971 example with an inverted case stamp and a bi-directional bezel, are particularly sought after. The use of specific materials, such as Uranus steel in some examples, further enhances its appeal to those interested in the technical evolution of professional dive watches.

Specifications

Caliber
Omega Caliber 1000
Case
Uranus steel
Diameter
54 mm
Dial
Black
Water Resist.
600 meters
Crystal
Mineral

Key Points from the Discussion

Advertisement
The Discussion
AM
amanico
Feb 6, 2024
That's an incredible creature. Still, I am not convinced by the crown lock system... With time passing, it breaks...

BI
Bill
Feb 6, 2024
That can be true but during the diving the crown is well protected. Not to mention the crystal which is significantly stronger most tool watches of the time.

AM
amanico
Feb 6, 2024
Yes, the efficiency is excellent, but I knew several plo profs with the crown which remained in your fingers... After a while, of course.

BI
Bill
Feb 6, 2024
Ooops like this. LOL The screw inside sometimes is loose.

AM
amanico
Feb 6, 2024
And the stem breaks...

BI
Bill
Feb 6, 2024
The divers tool watch.

Continue the conversation

This thread is active on the Omega forum with 23 replies. Share your knowledge with fellow collectors.

Join the Discussion →