1957 Seamaster Calendar (Ref 2849-2) - Original "CALENDER" Dial Variant?

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OmegaCollector72

·Fri. 4:25pm

Hello everyone,
I just registered to share and get some expert insight on a vintage piece in my collection. It is a 1957 Omega Seamaster Calendar powered by a Caliber 503 movement (Serial: 15595254). The caseback is stamped Ref 2849-2.
What really caught my attention under the microscope is the spelling on the dial—it explicitly reads "Seamaster CALENDER" with an "ER" at the end. I’ve read a bit about this era-specific Swiss-English text anomaly, but I wanted to show it to the true experts here.
I’ve attached clear photos of the dial script, movement, and caseback stamps. I would love to hear your thoughts on this variant's history and rarity.
Thanks in advance for looking!

 

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Spruce

·Fri. 4:55pm·Sunburst dial fan

Hi,
As you have probably noticed - no photos

What you need to do is click on ADD PHOTOS OR FILES, go into your photo library, select those you want to share, click on the blue tick in the top right corner (if it’s an iPhone) and the selected photos should appear at the bottom of your post.

Click on 'insert' so they appear within your reply and the press REPLY

 

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dsio

·Fri. 5:07pm·Ash @ ΩF

I’ve had a few 2849s but only ever Calendar

With the Australian spelling

 

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TIMElyBehaviour

·Fri. 9:28pm

dsio

I’ve had a few 2849s but only ever Calendar

With the Australian spelling

This is a stunning dial.


I have seen quite a few from this era, none ER

 

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OmegaCollector72

·Fri. 11:09pm

Thank you! It really is an incredible piece, and the 'ER' misspelling definitely makes it unique.
Since the photos didn't come through on the first try, I am attaching them here so you can see the dial details up close, along with the Caliber 503 movement (Serial: 15595254) and the inside case back (Ref: 2849-2).
Let me know what you think!"

 

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dsio

·Sat. 12:10am·Ash @ ΩF

That’s a super sloppy redial mate

 

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Davidt

·Sat. 2:06am

Unfortunately that’s just a poor redial

 

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TIMElyBehaviour

·Sat. 2:18am

I agree, looks reprinted poorly

 

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JimInOz

·Sat. 3:18am·Melbourne Australia

What's the Teddy connection?

 

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Dan S

·Sat. 6:38am

Welcome to the forum, OP, and I hope that this won't stop you from engaging and contributing, even though this was probably a disappointing outcome. As soon as I read your original post, I knew what I would see when I reached the photos.

OmegaCollector72

I’ve read a bit about this era-specific Swiss-English text anomaly ...

AI slop, presumably. There is an increasing amount of totally incorrect information being generated and perpetuated internet. AI hallucinations, and then people on reddit and elsewhere repeating the AI hallucinations as fact.

 

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Porteroso

·Sat. 1:22pm

Sorry about the watch OPie, but these are great watches.