OOPS I meant Valjoux' cal 720.

Dec 10, 2011,15:33 PM
 

Thank you.
Ztirual

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GP 1960' chrono with Valjoux cal 728 flighback function

 
 By: ztirual : December 10th, 2011-15:31
Hello, I am new on this forum and I admit my near total ignorance on all things GP. I have been offered a GP chronograph with flyback function, that appears to be a civilian version of the type 20 from the late 50's early 60's. Did such a watch ever exist... 

OOPS I meant Valjoux' cal 720.

 
 By: ztirual : December 10th, 2011-15:33
Thank you. Ztirual

Interesting...

 
 By: Tony C. : December 11th, 2011-12:31
While Peter's knowledge of GP far exceeds mine (and that of most people on the planet), and his enquiry to factory led to contrary evidence, I'm, tempted to believe that they may well have been produced in very small numbers. I say that because Peter hims...  

thank you!

 
 By: ztirual : December 12th, 2011-07:31
Dear Tony C., Thank you for your information. I did not see it my self but I concur with you that it would not make much sense of making fake watch using Valjoux' rare cal. 720. I read somewhere that the entire production of cal. 720 was only 200 pieces, ...  

link...

 
 By: Tony C. : December 12th, 2011-10:44
Hi Ztiruial, Here is the link from the original post by PeterCDE: gp.watchprosite.com I look forward to any other information that you may uncover. Regards, Tony C.

I think Tony has given you good information...

 
 By: dxboon : December 13th, 2011-06:45
...and it is certainly very possible that a small number of these watches were made. Cheers, Daos