Reverso Soixantième

60th-anniversary model and first of six complicated limited Reversos of the 1990s: the first Grande Taille case (42 × 26 × 9 mm), first display back, first solid-gold movementMovementThe working mechanism inside a watch or clock.. GuillochéGuillochéDecorative patterns engraved into a surface with an engine-turning machine. Similar-looking patterns do not by themselves establish how a dial was made. dial with power reserve top left, pointer date and small seconds.