Help with case clamp part number

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Can anyone help with the correct case clamp part number for a 166.066 Seamaster Big Yellow? I’ve got the right movement ring but unsure of the part number for the case clamp. Thanks in advance.
 
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Thank you! I had checked the cousins site with no luck.

The next challenge is the part number for the case clamp screw. Any ideas?
 
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Clamp - 72205501911
Thanks Archer - I presume I need two of these and that these are "550 1911" case clamps? (I see on eBay there are "550 1911S" clamps as well).

Can you confirm the correct screw needed to fit these?
 
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A ASTRA0
Thanks Archer - I presume I need two of these and that these are "550 1911" case clamps? (I see on eBay there are "550 1911S" clamps as well).

Can you confirm the correct screw needed to fit these?

550 1911 is a partial number, but that is what you need.

Screws are part 2255.