Omega Seamaster 60 Ref. 566.024 Blue/Burgundy Original?

Hello everyone,
I recently acquired a vintage ladies' Omega Seamaster 60 and have just sent it in for an overhaul. I would highly appreciate your expert insights on its originality.
Here are the specific details of the watch:

• Reference: 566.024
• Caliber: 681
• Movement Serial Number: 30,119,700 (dating to around 1969)

The most intriguing part is the color combination: it features a Blue Dial paired with a Burgundy Bezel. As far as I know, the standard configurations usually have matching dial and bezel colors.
Inside the case back, there is a watchmaker's handwritten service mark that appears to read "55.6.12A". In Japan, this format typically indicates the Shōwa era, translating to June 12, 1980. This suggests that the watch has been in this exact configuration for at least 46 years, ruling out a modern "franken" creation.
Could this be a rare factory-original special order, a specific regional release (e.g., Japan Domestic Market), or was it likely a bezel swap done back in the 1970s? Have any of you encountered a similar blue/burgundy configuration before?
I am attaching a picture of the movement and the serial number. Thank you very much in advance for your time and knowledge!

Please help me identify the history of this rare watch!


Sorry, my original thread title was cut off due to the character limit. What I really wanted to write was: "Seamaster 60 Rare Blue/Burgundy Ref.566.024: Is it Factory Original?"
This color combination is unrecorded and completely mysterious. I would deeply appreciate any insights, advice, or opinions from the experts here. Thank you so much for your help!

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Thank you so much for your quick and incredibly insightful replies, @Donn Chambers and @gatorcpa !

As a watch enthusiast from Japan, Omega has always been my absolute favorite brand. I deeply admire Omega because they constantly push the boundaries of horology.

Even today, they are the only manufacturer capable of mass-producing advanced technologies like the Co-Axial escapement and master-level anti-magnetic movements, making cutting-edge watches accessible to so many people around the world. That is why I love this brand so much.

Your observations about the bezel quality and the potential parts-swap scenario make a lot of sense. It is very helpful to get this kind of realistic perspective from experts who know the history of these models. Thank you also for sharing the eBay link and the past restoration thread—it gives me great reference material.

As mentioned, this watch is currently with a vintage restoration specialist here in Japan for a full overhaul. I will definitely share your comments with my watchmaker and ask them to closely inspect whether the bezel is an aftermarket part and if the dial is factory original or redone.

Once the watchmaker disassembles it and shares their findings, I will post an update here with more details. Thanks again for your time, your knowledge, and your kind welcome to the forum!


P.S.
I apologize, as I do not speak English and am using an AI assistant. However, please know that these words come directly from my heart, not just a machine.I am deeply grateful for this technology allowing me to connect with fellow enthusiasts globally. Thank you for this opportunity.

One quick thing I should mention about the photos.

The blurriness of the bezel font is likely due to my old phone camera (a 6-generation-old Galaxy Note20 Ultra). The autofocus mechanism is broken, so I actually have to gently tap the phone against the table just to get it to focus at all.

To be honest, I spent all my budget buying this Seamaster 60 for my eldest daughter, and a 1969 Constellation "C-Shape" (designed by Gérald Genta) for my second daughter. Because I prioritized these two beautiful 1969 Omegas for my girls,
I am completely out of funds to upgrade my phone for a while!

So, just like my Seamaster 60, my phone desperately needs an overhaul too—but I am completely out of funds for that as well! 😊

Because of the camera issue, the text in the photos looks a bit smudged and thicker than it actually is. Once the watch is back from the watchmaker, I will find a way to get crisp, clear photos to share with you all.