A self-winding mechanical horological movement including a pivotally oscillating weight, wherein the oscillating weight is provided with a decorative disc mounted on the oscillating weight and pivotally driven by the weight. The disc is fastened to a support that includes a stem inserted into a hole provided in the rotational shaft of the weight. The stem and the hole include non-circular section cylindrical portions corresponding with one another, so that the support and the disc are pivotally driven by the shaft. The disc forms a decoration that covers the entire surface of the movement, without requiring technical complexities. The disc can be free to undergo an axial movement in relation to the weight, so that the disc may be removed from the weight when the horological movement is dismantled from a watch case.

For example, an escape gear portion as a watch component includes a substrate containing silicon as a main component, and a light reflecting layer including a first silicon oxide layer, a silicon layer, and a second silicon oxide layer that are stacked, in this order, at the substrate, wherein, when the light reflecting layer is viewed in plan view, the light reflecting layer includes a first region and a second region, and a thickness of the silicon layer in the first region is different from a thickness of the silicon layer in the second region.

For example, an escape gear portion as a watch component includes a substrate containing silicon as a main component, and a light reflecting layer including a first silicon oxide layer, a silicon layer, and a second silicon oxide layer that are stacked, in this order, at the substrate, wherein, when the light reflecting layer is viewed in plan view, the light reflecting layer includes a first region and a second region, and a thickness of the silicon layer in the first region is different from a thickness of the silicon layer in the second region.

A timepiece includes a movement having a timepiece component, a first hand that has a first length and that is driven by the movement, a second hand that has a second length less than the first length and that is driven by the movement, a support plate provided on the movement, and a dial including a support plate provided on the movement and a sub-dial ring that displays an indicator related to the second hand. The support plate has a support plate ring member that is provided with a support plate opening and a support member that is coupled to the support plate inner circumference of the support plate ring member. The timepiece component is disposed below the support plate opening. The sub-dial ring is disposed on the support member. A cut-out portion is provided at an overlapping position that is above the timepiece component and that overlaps the timepiece component.

A timepiece includes a movement having a timepiece component, a first hand that has a first length and that is driven by the movement, a second hand that has a second length less than the first length and that is driven by the movement, a support plate provided on the movement, and a dial including a support plate provided on the movement and a sub-dial ring that displays an indicator related to the second hand. The support plate has a support plate ring member that is provided with a support plate opening and a support member that is coupled to the support plate inner circumference of the support plate ring member. The timepiece component is disposed below the support plate opening. The sub-dial ring is disposed on the support member. A cut-out portion is provided at an overlapping position that is above the timepiece component and that overlaps the timepiece component.

A skeleton watch includes a horological movement housed in a watch case, the horological movement being arranged to rotate at least one hand, the horological movement being covered by a dial, and the dial being disposed between the horological movement and the at least one hand. The dial includes a photochromic plate so that the horological movement is visible when the photochromic plate is exposed to an amount of UV radiation below a first threshold value and the horological movement is masked when the photochromic plate is exposed to an amount of UV radiation above a second threshold value.

A skeleton watch includes a horological movement housed in a watch case, the horological movement being arranged to rotate at least one hand, the horological movement being covered by a dial, and the dial being disposed between the horological movement and the at least one hand. The dial includes a photochromic plate so that the horological movement is visible when the photochromic plate is exposed to an amount of UV radiation below a first threshold value and the horological movement is masked when the photochromic plate is exposed to an amount of UV radiation above a second threshold value.

A skeleton watch includes a case middle which defines an interior space, a crystal and a back cover fixed to the case middle on either side of the middle to enclose the interior space, and a movement. The movement includes an openworked frame having a front face and a back face, the frame including an outer perimeter formed by two side positions, a top bar that connects between upper ends of the side posts, and a lower platform connected to lower ends of the side posts. The frame includes a central island positioned within the outer perimeter. The movement also includes a minute hand and an hour hand mounted on a central arbor integral with the frame. The movement also includes a motor having an electromagnet that extends outside of the outer perimeter of the frame in a radial direction from the central arbor.

A skeleton watch includes a case middle which defines an interior space, a crystal and a back cover fixed to the case middle on either side of the middle to enclose the interior space, and a movement. The movement includes an openworked frame having a front face and a back face, the frame including an outer perimeter formed by two side positions, a top bar that connects between upper ends of the side posts, and a lower platform connected to lower ends of the side posts. The frame includes a central island positioned within the outer perimeter. The movement also includes a minute hand and an hour hand mounted on a central arbor integral with the frame. The movement also includes a motor having an electromagnet that extends outside of the outer perimeter of the frame in a radial direction from the central arbor.

A timepiece dial according to embodiments of the invention includes a base member; an exterior portion that is provided on the base member, includes a laminated body of a plurality of layers, and has translucency; and a phosphorescent material that is provided on a rear surface of the exterior portion on a side of the base member.