Bernhard J
·Outstanding! Exquisite condition! It would appear as though the regulator is equipped with temperature compensation. The semi-circular arc on the bridge is (I think) the compensation device. We don’t run into a lot of watches like this on our side of the world.
Yes, that is the temperature compensation. Both, the shock protection and the temperature compensation device, were, I believe, invented by Breguet. Both are typical for highest grade watches with cylinder escapement. The top end are those with a ruby cylinder instead of the conventional steel cylinder. As soon as I have it in my hands, I will check for this. Would be a great surprise to find a ruby cylinder in an anonymous watch.
The condition is not perfect, there is some minor corrosion on the regulator and on the bridge over the Maltese cross setting. But this is nothing to complain about, but to improve by occasion.
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