Here's mine, CK14381, 17015208.
One cool thing about this one is that I have the original box, chronometer certificate, hang tags and sales receipt, for get this $64.50!
Another interesting thing is the bracelet, a flat link with the expandable ends, identical to the 1039 and 7912 found on the same vintage Speedmasters and SM 300s, with no reference number, just a date code of 2/61, jiving closely with the purchase date of 9/60. Not something commonly seen on a Constellation. Since the bracelet is not noted on the receipt I assume it was added shortly after purchase. It's always been my understanding that these were supplied on straps and that bracelets were sold as accessories be the dealer.
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