SuitbertW
2411
Just as a side note....
Mar 29, 2013,09:01 AM
Hello, Nilo,
"...I know that everyone here loves the 13ZN but I prefer the 30CH because of a single "modernity" that is the shock protection..."
Just in case I understood this quote correctly, I'd like to add a little bit of info - you can find the caliber 13ZN with a shock protection as well.
It is an earlier type of shock protecting devive though, namely "shock resist" which used to be a trademark name - you can recognize it
by the star shaped spring covering the cap jewel only on the outer part - looking a bit unusual, but worked not too bad, as one
doesn't find too many broken pivots with this set up.
Only a bit more "unpractical" for watchmakers, as the balance cock side cap jewel needs to be opened from the bottom side by two screws - much more uncomfortable compared to later incabloc for example.
Another side note - the 30CH seems to have a very good going train base - Longines watchmakers used a stripped down version (going train only)
as base for some of their observatory competition movements as well.
Best regards
Suitbert