ETA recognition

[gary17]

Hi its a long shot but worth a go.

This is a 23 jewel automatic omer watch from around the 50s 60s it has a ETA movement that begins 24 -- I know i should dismantle it to check it clearly but it has been knocked and is indistinctive.. Its just the winding stem i need damn thing snapped on me .

Last number may be 9 but its really not clear any more.

Anyoner with a idea what it may be give us a shout.

cheers

gary

[Tudor]

Well, it’s a no date, so that narrows it down. 
 

24xx family should all use the same stem. 
 

2483 maybe?

2784 is the date movement in my 9411s. 2783 was the no date variant I think. 
 

last digit goes up with complications. 
 

no date; date; day-date

i don’t have my files here at home or I’d look it up in the old data sheets. 
 

efit- I forgot sometimes beat rate varied on the older movements. But I don’t think that would effect the stem. 

Edited August 31, 2020 by Tudor

[AlexeiJ1]

Looks like 2471

[JohnR725]

It looks like your watch numbers earlier enough that it's probably in the bestfit book. That means we could look up the stem dimensions and find out what the stem belongs to. Or you can look at the website below and have the dimensions their figure out what you have.

https://www.windingstems.com/eta.php

[Tudor]

Another great resource! Thank you for posting John!

[gary17]

Thanks guys a mine of information. And some nice new sites. 

Cheers

Gary

[watchweasol]

Hi Gary   Its not unlike the eta 2428,  have a look at Ranfft site,   

I have attached the 2428 tech sheet for you to compare    cheers

 

3403_ETA 2428.pdf

[HSL]

Hmm..  Think you have to take off the winding mechanism and the balance bridge to be completely sure,
since it has a pin and not a screw on the oscillating weight it is a 24XX. It has no date and looks like a pure dial side so probably an
ETA 2459. 
When confirming the exact caliber if it actually says ETA 2459 you can look for any of these stems and they will probably fit since they should be the same.
ETA 2390 
ETA 2391 
ETA 2451 
ETA 2452 
ETA 2459 
ETA 2472 
ETA 2474

[watchweasol]

working from HSL's list it seems that the 24 xx generation use the same stem quoted on Ranfft as W2426  or W3226  the 2459 and the 2474 both the same.

[gary17]

Cheers bud I'm off to ebay