Gents,

A friend of mine bought Alpha's Seamaster 552 a little while ago, knowing it had an incorrect crown on it; he's now looking to fix that; can anyone tell me how I can find the correct part number for a crown/stem for this movement/case ref? I've looked at cousins and ofrei and it's not as simple as I thought it would be....

 

Ofrei use the caseback number not the calibre. Do you hae a photo of the inside caseback?

 

I took a very fuzzy one, need to get another - but I did quote the case ref in the title...

 

This seems to have the crown for this case?
http://www.ofrei.com/page_147.html

 

Ok, so following Daniels advice and stuffing the case ref into ofrei (rather than navigating as I was before), it gives Omega Crown Stainless Steel 42052/42527 w/Separate Female Stem Adapter - stuffing the 42052/42527 into cousins shows pictures of a crown similar to whats on there at the moment, rather than the one in the OVD:
http://www.omegawatches.com/spirit/history/vintage-omegas/vintage-watches-database?ref=14480

and no clues on what the correct stem is (one in there looks too long) - can anyone suggest a stem? thanks - ridiculously fast responses, BTW Daniel.

 

Well it is either this, or talk to my wife.....

 

That makes sense. Thanks Steve.

 

The Omega Extranet shows the crown part number as 069ST42055. The stem is 72205501106. Note these are currently available crowns, so may not be "original" as the one on it when the watch was produced. Note that with many modern crowns you will need to replace the stem (threads are different than with many vintage crowns) or use a stem adaptor. For me those are only an option of last resort, and I will always replace the stem when I can.

And yes, stems come longer than needed, and must be cut to the correct length. Easy to do with a simple crown, somewhat harder with a screw down crown. Measure twice, cut once!

Cheers, Al

 

if it's a bit too short ? I put some soldering zinc into that crown hole.

 

Thank you all!