Ref. 168.020 - The chronometer SMDV

Hello everyone!

Just when you believe you have seen everything of a particular model...

Today, I would like to talk about a mysterious reference that I just added in the Seamaster de Ville thread.

And that is the chronometer graded Seamaster de Ville reference 168.020.




But first, a little reminder about the Omega nomenclature for reference numbers at the time:

The meaning of six digit reference numbers:
Omega employed six digit reference codes from 1962 to the mid-1990s. While the last three digits are just factory model numbers, the first three digits give useful information about the watch.

First digit:
1 - Men's watch,
2 - Men's jewelry watch,
3 - Men's bracelet watch,
4 - Men's jewelry bracelet watch,
5 - Lady's watch,
6 - Lady's jewelry watch,
7 - Lady's bracelet watch,
8 - Lady's jewelry bracelet watch.

Second digit:
1 - Manual winding without seconds,
2 - Manual winding small seconds,
3 - Manual winding center seconds,
4 - Manual winding chronograph,
5 - Self-winding without seconds,
6 - Self-winding center seconds,
7 - Self-winding chronograph,
8 - Electronic chronograph,
9 - Electronic.

Third digit:
1 - Non-water resistant,
2 - Non-water resistant calendar,
3 - Non-water resistant chronometer,
4 - Non-water resistant chronometer calendar,
5 - Water resistant,
6 - Water resistant calendar,
7 - Water resistant chronometer,
8 - Water resistant chronometer calendar.

I have very few data about this reference. I stumbled upon it at first because both Boley and Ofrei list it as a Seamaster de Ville reference, bearing the correct crystal and crown for a SMDV.





Then, I searched for it and found one that was previously for sale on several platforms, here are the pictures:










https://hqmilton.com/products/omega-seamaster-de-ville-168-020

It is advertised as 'running at COSC specs', but there is no chronometer mention on the dial.

More intriguing, it is powered by Omega calibre 562, which is a non-chronometer graded movement.

https://www.classicdriver.com/en/watch/omega/seamaster/1960/805987

Or that is what I believed. I found two sources that list that movement as chronometer graded in certain circumstances:



Source: http://users.tpg.com.au/mondodec/calibres.pdf




Source:
http://www.chronomaddox.com/OmegaCaliberList.html#Chronometer Grade Movements

Unfortunately, the sales ad doesn't show any pictures of the inner caseback that would prove this watch is indeed reference 168.020.

Does anyone here know about this reference? Does anyone have one? Are there pictures of the inner caseback of this reference somewhere?

Thank you all!