Seamaster case back emblem

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166026

·Oct 12, 2025

Hi all,
Just curious, when did Omega start putting the hippocampus sea emblem on the back cases of Seamaster watches?

 

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166026

·Oct 12, 2025

Never mind! I fiquered it out.

 

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Porteroso

·Oct 12, 2025

Did you find a year? I'm interested. Don't know the exact year off hand. 1940s?

 

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JimInOz

·Oct 13, 2025·Melbourne Australia

166026

Never mind! I fiquered it out.

We're a sharing community here and every bit of information we find can help others searching for information.
In this case "Seamaster Caseback Emblem" would currently come up with nothing useful.

Care to share what you found?

 

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pennsyl936

·Oct 13, 2025

According to Petros Protopapas, it was between 1957 & 1958

 

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166026

·Nov 8, 2025

JimInOz

We're a sharing community here and every bit of information we find can help others searching for information.
In this case "Seamaster Caseback Emblem" would currently come up with nothing useful.

Care to share what you found?

"Introduced in 1956, the seahorse logo was engraved on the caseback of the Seamaster and the Railmaster, which was primarily a water-resistant watch with specific protection against magnetic exposure.

So, with the 1957 launch of the trilogy collection in (consisting of the Seamaster, Speedmaster, and Railmaster), Omega issued a line of professional watches engraved with the new mythical seahorse logo.
The emblem was officially adopted in 1958 to signify the Seamaster's water-resistant capabilities

 

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166026

·Nov 8, 2025

Porteroso

Did you find a year? I'm interested. Don't know the exact year off hand. 1940s?

Yes, here is the history:
Introduced in 1956, the seahorse logo was engraved on the caseback of the Seamaster and the Railmaster, which was primarily a water-resistant watch with specific protection against magnetic exposure.

So, with the 1957 launch of the trilogy collection in (consisting of the Seamaster, Speedmaster, and Railmaster), Omega issued a line of professional watches engraved with the new mythical seahorse logo.
The emblem was officially adopted in 1958 to signify the Seamaster's water-resistant capabilities

 

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padders

·Nov 8, 2025·Oooo subtitles!

So the exact year is 1956, 1957 and 1958? Glad we clear that up lol.

 

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Porteroso

·Nov 8, 2025

Yeah it's hard to decipher. Seems to say that they engraved the first caseacks with the seahorse in 56, didn't sell any until 57, and made it official in 58.

 

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166026

·Nov 26, 2025

The Logo was used first in 1956 intermittently with various models but not on all. There were Seamaster watches with cases that didn't have the logo, same with the 1957 models. In 1958 the logo became the official logo for all Seamasters. Again strangely enough, even after that date there are Seamaster watches without the logo on the caseback.

Edited: Nov 26, 2025

 

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SpeedyPhill

·Dec 3, 2025

(Photo: NASA)

 

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166026

·Dec 8, 2025

SpeedyPhill

(Photo: NASA)

Thank you, I had never seen that one!