Mechanical automatic, exclusive Dubois Dépraz calibre, 58 jewels.
Decorated and engraved rotor.
6 chamfered satin-finished seconds bridges set with diamonds.
Minute-wheel with Pierre DeRoche logo.
Hand affixed by a transversal pin.
6 retrograde seconds hands on gears, strip-springs return.
Hours, minutes, seconds with retrograde functions in 6 ten-second sectors.
Moving retrograde hand indicator.