blomman Mr Blue
38586
I am no expert...
Hi OC,
Very nice PW - you should send it to the manufacture for a SPA treatment!
I am no expert, but from the looks of the bridges and the swan neck regulatur it looks to be the Cal 20 1/2'" or 20 1/2'" N.V.S.I.
Sorry, but I don't know what the letters are for...

Hope this helps in the right direction!
Best
Blomman
re: 1937
By: DRMW : June 25th, 2012-11:01
Very cool to see this Zenith, thanks for sharing it! From my conversation with Jean-Frederic Dufour ( http://zenith.watchprosite.com/?show=nblog.post&ti=678878&fi=1123 ) PPro: And in regards to taking care of the customers, how does Zenith address...
I am no expert...
By: blomman Mr Blue : June 25th, 2012-14:30
Hi OC, Very nice PW - you should send it to the manufacture for a SPA treatment! I am no expert, but from the looks of the bridges and the swan neck regulatur it looks to be the Cal 20 1/2'" or 20 1/2'" N.V.S.I. Sorry, but I don't know what the letters ar...