Omega 1928, 8 days, cal 598-d, ref 14.785-B need help

Posts

10

Likes

2

Rafi fuss

·Aug 21, 2026

Hi everyone , need help to open the movement in the back. how to do it? need a special equipment? thanks

 

Posts

305

Likes

228

Knudsen1971

·Sep 3, 2026

Hi, I don`t have this exact case, but I`d bet, that you have to remove the winding and time setting nut first, to be able to unscrew the caseback. looks like it may have thread, or just snapped on?
Mine has banjo fitment.

 

Posts

10

Likes

2

Rafi fuss

·Sep 3, 2026

Thanks for your comment. I tried this. But after removing the winding and time setting, still, l can’t remove or turn it. I tried also the remove the whole frame , from dial side. After removing the hands, l found that the dial plate is impossible to be taken off in order to see the movement from the dial side. Any more ideas?

 

Posts

18,776

Likes

39,021

JimInOz

·Sep 3, 2026·Melbourne Australia

Have you tried this?

 

Posts

10

Likes

2

Rafi fuss

·Sep 3, 2026

JimInOz

Have you tried this?

Thanks for the tip. never thought about it... I am trying now and let you know soon

 

Posts

3,166

Likes

6,607

Fallout Boy

·Sep 3, 2026

can you show us the complete engraving?

 

Posts

10

Likes

2

Rafi fuss

·Sep 3, 2026

Rafi fuss

Thanks for the tip. never thought about it... I am trying now and let you know soon

It doesn’t help me to get to the movement

 

Posts

10

Likes

2

Rafi fuss

·Sep 3, 2026

Fallout Boy

can you show us the complete engraving?

 

Posts

3,166

Likes

6,607

Fallout Boy

·Sep 3, 2026

and th 6 (or 8) screws?

 

Posts

10

Likes

2

Rafi fuss

·Sep 3, 2026

Fallout Boy

and th 6 (or 8) screws?

I did it and got the whole frame out. But the dial is fixed and didn’t got it off. So I can’t see the movement

 

Posts

8,149

Likes

36,674

cristos71

·Sep 3, 2026

I think if you unscrew the winder and setter the raised back will lever off

 

Posts

3,166

Likes

6,607

Fallout Boy

·Sep 3, 2026

better try to turn it first....B
bayonet lock or similar?

 

Posts

10

Likes

2

Rafi fuss

·Sep 3, 2026

cristos71

I think if you unscrew the winder and setter the raised back will lever off

I tried. Can’t get the movement off from the back. Not by turning not by pooling out

 

Posts

3,166

Likes

6,607

Fallout Boy

·Sep 3, 2026

Maybe you should ask here:

https://omegaforums.net/threads/calling-all-pocket-watch-buffs.127856/

Thread 'Calling all Pocket Watch Buffs' ·

Since there is not a forum for pocket watches, several of us pocket watch “nuts” have put our heads together to see if, by focussing on the topic of pocket watches in one “catch all” thread, we...

Canuck · Feb 22, 2021

 

Posts

18,776

Likes

39,021

JimInOz

·Sep 3, 2026·Melbourne Australia

I thought maybe the large round studs the stand attaches to are screwed in but maybe not.

Maybe @OMTOM has had some experience with this.

 

Posts

572

Likes

1,459

OMTOM

·Sep 4, 2026

Yes, I think I can help. Thanks for the call Jim.

Cristos (above) is correct. The case-back is a press-fit.

The two controls must first be removed (CARE: the winder is a reverse thread and must be moved CLOCKWISE to remove).

There will be a slot (sometimes hard to find) into which a case-knife can be inserted - to allow the case-back to be levered off.

That allows access to the movement retaining screws - and that will allow any further dismantling.

 

Posts

572

Likes

1,459

OMTOM

·Sep 4, 2026

 

Posts

10

Likes

2

Rafi fuss

·Sep 4, 2026

OMTOM

T

OMTOM

Thank you very much!! I opened it. Was not easy

 

Posts

572

Likes

1,459

OMTOM

·Sep 5, 2026

Rafi fuss

T

Thank you. I'm pleased it worked.
In passing, I think the reference of your piece is not 14.785B: I think it's 14.706B (not much difference!). Year 1927..

 

Posts

10

Likes

2

Rafi fuss

·Sep 5, 2026

OMTOM

Thank you. I'm pleased it worked.
In passing, I think the reference of your piece is not 14.785B: I think it's 14.706B (not much difference!). Year 1927..

Attached is omega letter when I asked them before a year. The watch is not working. I now get all the parts off and try to examine. I will report any news. Thanks.