Any help on what I’ve got here please

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Thanks Dan , I have a number 633 on the end links . Does this mean anything to you ?

The 633 endlinks are fine on the newer bracelet that is on the watch. The correct end-links for the 7912 bracelet are unicorn pee.
 
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The 633 endlinks are fine on the newer bracelet that is on the watch. The correct end-links for the 7912 bracelet are unicorn pee.
The other pair has a number 6 or 9 on them ?
 
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Very nice catch. Very valuable as well. The 6 end links alone are worth more than their weight in gold