15407ST, Royal Oak Double Balance Openworked, Steel 3350 While this particular Cintrée was

While this particular Cintrée was the product of a custom project

leaving various sections of the chronograph entirely transparent

it is distinctly whimsical and of the 1970s

art deco fonts

15407ST, Royal Oak Double Balance Openworked, Steel 3350 While this particular Cintrée wasA ref. 15407ST, a world first Double Balance Openworked Royal Oak. The Double Balance couples two balance wheels on a central pivot, 180 degrees out of phase with each other. This counters positional errors while adding doubling the effective balance wheel mass. To highlight this accomplishment, the 15407ST is thoroughly hand finished on all bridges with a standard rarely seen today, not shy to an interior angle. This innovation is all wrapped in