amanico[JLC Moderator]
373451
It is an automatic movement, with a bumper, my friend, not a rotor.
You were looking for a rotor, it is a bumper.

Thanks for your kind comments, my friend.
Nicolas
About accuracy.
By: amanico : July 16th, 2013-22:35
A well adjusted Cal 881 / 883 is very good, in terms of accuracy, and can easily compete with current JLC movements. But we have to keep in mind that the Master Tourbillon won the Chronometry contest, in 2009, with some splendid results. Best, Ming. Nicol...