Hallo all,

is it possible that one of the more knowing experts can explain to me in which valjoux 72 watches, in 2444, in 2446, in 2447 and others, a reglage with breguet hairspring or flat hairspring were mounted at the factory.

My near by watchmaker waits meanwhile 2 years in finding a breguet hairspring for a 2444. When I have a look at the movement pictures in the net, the fewest have one, most have flat ones

I observed no conventionality, no standart . One time there is a breguet hairspring, sometimes a flat one.

Is it due to the service to replace breguet hairspring with a cheaper and lighter available flat hairspring ? Is it easily interchangable?

With the Rx Daytona I see more a standard in the direction of the expensive variation. That's why the situation of the price has probably developed like this.

thanks for your observations and ideas

cheers
Mich