Jaeger-LeCoultre

I should have done it a long time ago, but I finally bought a few of these acylic watch stands from the bay for about 2 bucks each. Here are the results which I quite like. Hope you like them as well. Here is my photo studio setup, right on kitchen counte...  

Does anyone know why? Is there something particular about this movement that makes this necessary? Claude

Hi Claude, Shock protection involves a cap jewel and moveable hole jewel in combination that are held in place by a spring to allow some shifting out of position during a shock. The escape wheel on the JLC caliber in question has what is called a Duofix s...