I am trying to locate it, with no success. It should be one of those big crowns about 6mm in diameter, tap12, for a 2,5mm tube. Ofrei or cousinsuk have compatibles, but they are'nt it. Does anyone have a reference number I can look for in ebay and the www?.

 

It think the reference of the crown is ST45004 or ST45006


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Don't think it's the ST45004, I just used one of those to replace the crown on my 286 SM30.







The 45006 is listed by Otto Frei as follows:



Sure that's not it?

 

Nope. That's an older one, tap 7. The one I'm looking for is tap 12, and the shape is different.

 

Oh? I just checked Cousins with your case number:



So 45004ST then? Same crown as what I have now.

 

I just checked also here in Germany , 45004ST [emoji108][emoji106]


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Omega lists replacement as 069ST45004.

Cheers, Al

 

You can see by the pics they are not the same. I guess the original is no longer available and that one is the replacement. Oh well. Thanks to all for your help.