Timepiece comprising a display with a moiré effect

A timepiece comprising a watch movement including a chronograph or a countdown, the timepiece having a fixed body and a chronograph or countdown counter associated with a display with a moiré effect, wherein said counter is a counter of seconds of the chronograph or countdown for displaying the seconds associated with the chronograph or the countdown, the counter comprising a mobile disc with an indicator of the seconds dissociated from the moiré effect, the mobile disc being, on the one hand, connected to an axis in engagement with the watch movement and, on the other hand, arranged to rotate above or below the fixed body, wherein a rotation axis of the mobile disc is coaxial with a central axis of the counter, one of the mobile disc and the fixed body comprising a plurality of apertures arranged over 360°, the other of the mobile disc and the fixed body comprising a marking with a repetition of patterns including a first set of patterns having a first visual appearance and a second set of patterns having a second visual appearance, the patterns having the first visual appearance being arranged alternately with the patterns having the second visual appearance over 360°, said plurality of apertures being separated from each other by a plurality of portions intended to progressively mask the patterns of the marking in order to produce the moiré effect when the mobile disc is rotated.