Here is my most recent arrival Ultra Chron Chronometer (6651 movement) dated March 1975 Thanks to quick and efficent Longines' archive, I know that my watch has a terrible carbon accounting : Saint Imier - New Zealand - Paris
Just back from my watchmaker, have a nos OEM crown set up - thanks to John Senior @obsoletewatchparts - otherwise running within the Cosc which is very impressive regarding its age Those 12.68Z, they do rule them all
Here's my 12.68z: ...and now on new leather: more modern on the 'blue', esp. with the white stitch, but I like the change..
Longines 30CH ref. 6729, 18k screwdown, movement 9648486, nearby the one pictured in Goldbergers book: rgds - h.u.
Yes, Fantastic! I'd 'dibs' this one, but I'm not ready to live in the dumpster just yet (though I'm thinking about it!)...