A watchcock is a verge fusee watch cover plate designed to protect the delicate parts of the movement. Watchocks are attached to the back of the watch, directly over the movement, and are only seen when these antique watches are taken from their outer cases. Usually, watchcocks were decorated in the styles of the period and they serve as an extra source in dating such watches. These elaborately carved designs were delicately pierced and engraved making this heretofore unseen component exceedingly beautiful.

As the need for watchcocks waned, clever jewelers put these beautifully executed designs to use as pendants, necklaces, earrings, etc. These repurposed jewelry bits and bobs also had gemstones strategically placed where opportune openings already existed. Chains were added, some were regilded, and lovely, wearable jewelry was created. Victorian fashionistas festooned themselves in this recycled jewelry craze.

Contemporary jewelry creators are still employing watchcocks in their designs. Steampunk jewelry in particular makes use of watchcocks and other disused watch components, all in conjunction with other mechanical anachronisms.