Girard Perregaux

18k gold HF Chronometer; 34mm (wears larger); substantial case (net 22.7 grams / .8 oz); cal. 42x (second generation HF movement, first produced in 1968, and introduced a hacking function to the HF line). Relatively few were produced in gold cases, and th...  

I appreciate all of your kind comments. With regard to accuracy, over a 10 day testing period, my watchmaker reported a three second gain! To be fair, I haven't yet tested it on my wrist, but I wonder how many high-end, contemporary watches would be able ... 

The first generation models also had a hacking mechanism. For more info, please have a read of my article at The coin edge bezel is unique to solid gold Chronometer HFs. Not even the gold filled ones got it. I have more photos of the paperwork. PM me for... 

... from a time when they did some beautiful minimalist dials. And the history of the HF movements is special. A real racing machine for the wrist. Thanks for sharing. Andrew