Help with Caliber 351

A

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Abs1

·Oct 30, 2015

Hi, firstly I am new to this forum. I was researching a watch I own and came across your post from 2013. I am really hoping that you can perhaps help me with a query I have.

I have an Omega bumper automatic watch. The dial is signed 'Omega Automatic Chronometer Officially Certified' and the movement is caliber 351. I have been trying to do some research into if the 351 movement is actually chronometer rated. All the other information I have so far come across indicates it's not a chronomerer, however your post eludes to that some 351s were chronometer rated. Is this the case? I can send you photos of the movement and dial if that helps.

Many thanks in advance. This is my first comment on this forum, so please bear with me! Abs

 

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wsfarrell

·Oct 31, 2015

Fab Suisse indeed!

 

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cicindela

·Oct 31, 2015·Steve @ ΩF

Please post pictures.

 

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kyle L

·Oct 31, 2015·Grasshopper

Cal. 352 and possibly 354 have Chronometer on the dials but not 351. Please post some pictures!

 

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Abs1

·Oct 31, 2015

 

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Abs1

·Oct 31, 2015

I have added a photo of the watch. Your views are very much appreciated.

 

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Abs1

·Oct 31, 2015

 

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Abs1

·Oct 31, 2015

 

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mac_omega

·Oct 31, 2015

The condition of the dial does not match with the rotten rest of the watch...
Dial is a refinished one and hence the wrong chronometer labeling.

 

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Abs1

·Oct 31, 2015

Ive added some more photos. Are you able to advise me if this watch is original or otherwise. Does the dial originally belong to this watch? I have since found on the Omega database that the case 2577 had a 351 bumper movement, which is consistent with this watch. I have found that some 351s were chronometer rated. But I'm not sure if the dial is original to the watch. You views/guidance is appreciated.

 

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DOMriviera

·Oct 31, 2015

The dial may not have the "t" before and after "swiss made" as there's no tritium neither on the indexes nor on the hands; not enough expert to tell if the indexes and hands were used in 1950 which seems to be the movement year. Try also to check the case back #.

 

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nightowl

·Oct 31, 2015

The T in "T Swiss Made T" stands for tritium, which would be a luminous compond that should be present on the index and/or the hands (which it is not). To me it looks like the dial is slightly too small for the case.

 

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mac_omega

·Oct 31, 2015

A Abs1

Ive added some more photos. Are you able to advise me if this watch is original or otherwise. Does the dial originally belong to this watch? I have since found on the Omega database that the case 2577 had a 351 bumper movement, which is consistent with this watch. I have found that some 351s were chronometer rated. But I'm not sure if the dial is original to the watch. You views/guidance is appreciated.

Read my previous response which "crossed" when you were just uploading the additional pics

 

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Abs1

·Oct 31, 2015

So I take it from what you say the dial is not original. On another note the dial is marked T Swiss Made T

Edited: Oct 31, 2015

 

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xbarx1

·Jul 1, 2022

kyle L

Cal. 352 and possibly 354 have Chronometer on the dials but not 351. Please post some pictures!

2577-8 with a cal. 351

 

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Olhenry56

·Jul 1, 2022

xbarx1

2577-8 with a cal. 351

Do you have a photo of the movement? From what I understand, Ranfft lists 343, 352, 354 (partially), and 355 (partially) as 28.1mm bumper chronometers. Perhaps the movement and dial were not initially together.

 

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Olhenry56

·Jul 1, 2022

Oh wait, can't be 343 - sweep second hand

 

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xbarx1

·Jul 2, 2022

Olhenry56

Do you have a photo of the movement? From what I understand, Ranfft lists 343, 352, 354 (partially), and 355 (partially) as 28.1mm bumper chronometers. Perhaps the movement and dial were not initially together.

No, I don't, the seller was not a watch person and didn't remove it. I looked up comparable models online to determine it. There was one with the exact same dial as this one. They didn't show a pic of the movement either. I would have saved that for my files. They did list the movement as a 351. I took their word for it, there was no reason to question it.

 

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Dan S

·Jul 2, 2022

xbarx1

No, I don't, the seller was not a watch person and didn't remove it. I looked up comparable models online to determine it. There was one with the exact same dial as this one. They didn't show a pic of the movement either. I would have saved that for my files. They did list the movement as a 351. I took their word for it, there was no reason to question it.

So you are posting your watch as evidence of a chronometer-rated cal 351 but you haven't even seen the movement.

 

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gatorcpa

·Jul 2, 2022·ΩF InvestiGator

xbarx1

No, I don't, the seller was not a watch person and didn't remove it. I looked up comparable models online to determine it. There was one with the exact same dial as this one. They didn't show a pic of the movement either. I would have saved that for my files. They did list the movement as a 351. I took their word for it, there was no reason to question it.

Here is the listing for Ref. 2577;

https://www.omegawatches.com/en-us/watch-omega-seamaster-omega-ck-2577

My guess is that your watch has a cal. 354 movement with chronometer adjustment language on the rotor. The major difference between the cal. 351 and cal. 354 is the addition of a swan’s neck regulator. I have never seen a cal. 351 with a chronometer certificate, although it is plausible that they could exist.

The only way to know for sure is to bring your watch to a watchmaker and bring your camera.
gatorcpa