
Blomman Mr Blue embarks on a nostalgic journey into vintage Omega collecting, inspired by his father's lost Seamaster. This post captures the emotional connection many collectors feel, highlighting how personal history often shapes horological pursuits. His acquisition of a 1950s bumper Seamaster marks a significant step in honoring that memory, even as his primary passion lies with Jaeger-LeCoultre.
Hello Omega fans,
An Omega newbie here taking his first trembling baby step into the brand!
My first watch memory was my fathers Omega Seamaster (I was maybe 3-4 years old).
Unfortunately his watch broke and ended up in a drawer, later to be lost…
If I remember correctly it was a SM dress watch, silver dial, central second, thin metal index, manual, SS, late 1960’s – early 1970’s.
With this in the back of my head, early in my “collecting” years I picked up this 1950’s bumper SM.
Just to “walk” in my father’s footsteps…

I have always been drawn to Omega but as you might know I am a crazy JLC hardcore fan.
So almost every time I go for a new watch I end up with a JLC…
But this time – I finally got the Omega I have been looking for!
With great help from PuristS friends of course!
Seamaster, Cal 501.

My research lead me to understand the Cal 501 is a classic Omega calibre used for many years in Seamaster’s, Globmaster’s and Constellation’s.
The full rotor automatic movement was introduced in 1956 and was in use during most of the 1960’s.
Omega experts – please correct me if I am wrong!
Here is a Technical Guide of the movement.

The Guide covers both Cal 471 and Cal 501.

If I understand correctly the biggest differences between the two Calibres are the size of the movement and the Swan neck regulator (on the Cal 501).

This document is from December 1955.

I love this kind of old documents!

Maybe it’s time form e to start an Omega section in my library..?

Quick guide!

And oiling!

One of the most desirable JLC watches (IMO) is the Deep Sea Alarm – European version.
No I am NOT talking about the Tribute…
The Original!

So what would be more natural then going for the SM 300?
Thin bezel and big arrow hand…
An extra bonus would be a Lollipop second hand like this…

The similarities are many; the black dial and yellow shark teeth like index, case shape and size, outside bezel...

Both from the same time period – end of 1950’s.
The SM launched in 1957 and the DSA in 1959.
Both iconic!
The JLC with reference E 857 and the Omega with reference 2913.

This example is Ref 2913-7 SC and movement number in the 16 million ranges which place it 1958-59.

Question, on the inside of the case back it says “PATENT PENDING”.
Which patent is this text referring to? (Sorry if this is a newbie Q?)

She wears some “beauty marks” from wear and tear…

The luminous dot in the bezel is redone…
Maybe the bezel inlay as well?

Unfortunately the case back is over polished, but the Seahorse is still visible.

To sum up – a watch that makes me very happy!

My first real step into the magic world of Vintage Omega.

Hope you enjoyed.
Best
Blomman
PS. Omega experts; any info on this watch or in general when it comes to vintage Omega would be highly appreciated!
The Jaeger-LeCoultre Memovox reference E857 is a notable example of the brand's alarm watch production from the mid-20th century. This particular reference is distinguished by its larger case size compared to earlier Memovox models, reflecting a shift in design preferences during its era of production. It maintains the characteristic dual crown configuration, with one crown for time setting and winding, and the other for setting and winding the alarm function.
This reference typically features a stainless steel case, though gold-capped or solid gold variants were also produced. The case diameter measures 37mm, a substantial size for its period. It houses the automatic Jaeger-LeCoultre Caliber 825, an important development as it was one of the first automatic alarm movements. The movement provides a power reserve of approximately 45 hours and is protected by a plexiglass crystal.
The E857 appeals to collectors interested in historically significant alarm watches and the evolution of automatic movements. Its larger dimensions make it a more wearable option for modern tastes compared to some earlier Memovox references. Variants exist with different dial finishes and hour marker styles, offering variety within the reference.
...a very prolific journey ahead. Congratulations on an uncommon watch to begin it with. Ruckdee
Good to see you here. Concrats on that beauty. And look at the documents you've already gathered. We are fortunate to have you here and Look forward to your enthusiasm and good posts. We can already imagine you displaying the most desirable Omegas in your acquisition. Best Ed
I love the watch and have been fortunate to see it in the flesh. I see that you changed the strap, looks nice. Best regards, George
You know I have a strong feeling and love for the CK 2913. If you're a fan of diving watches, this one is a must have, one of the most elegant. And the Lollipop is the cherry on the cake. What a pair it does with the Deep Sea Alarm! Huge congratulations, my friend. Best, Ncolas.
now your researching Vintage Omega's you'll find that all that time dedicated to JLC was wasted you've got 2 very nice pieces there, one iconic. is there any thought of a speedmaster entering the family ? best G
You certainly didn't return empty handed from your last trip. Which theme do you think this is the start of, Omega watches or Divers?
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