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Hi guys,

I recently picked up 2 vintage Seamasters with missing or incorrect crowns and was wondering if someone can indicate the correct style/size for each?

The first is a Seamaster GX6250. Some of these I’ve seen with a notched/“clover leaf” crown and some with a hexagon crown. Which is correct?

The second is a Seamaster Cosmic. I can’t get inside the case due to the monocoque design. The caseback is stamped “166023.”

Any help is appreciated! TIA!




 

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For the 6250, the current crown for that is 069SX42065.

For the Cosmic 166023, the current crown for that is 069SX42527.

Cheers, Al
I find interesting, the current crown
in my older books its 42070 for the 166.023, what's the difference??
 
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