New to me, here is my 1966-1968 Constellation 168.017 gold cap over stainless steel. Just back from the spa, where she received a full service, with the only replacement parts being a new case back gasket and mainspring. All other parts, are as found. My watchmaker (Kelly Hunter,
www.artofthewatch.com) is confident that he was the first to open her up and certainly the first to service.
Simply put, she is a spectacular example, and just about perfect - now if I can only work up the gumption to wear her as she's still on the original strap!
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