Mechanical automatic, exclusive Dubois Dépraz calibre, 58 jewels.
Decorated and engraved rotor. Central bridge and 6 chamfered, satin-finished seconds bridges.
Minute-wheel with Pierre DeRoche logo.
Hand affixed by a transverse pin. 6 retrograde seconds hands on gears, strip spring return.
Hours, minutes, seconds with retrograde function in 6 ten-second sectors.
Moving retrograde hand indicators.