The signature on the dial of the Grantham London clock confirms that this kit was made in England, where the most famous workshops were those of James Cox. Despite this, the inscription 'Si en m'ouvrant, Votre pensée s'amuse jusqu'à moi, je jure sur ma foi, Je serai bien récompensée' (If, when you open me, your thoughts turn to me, I swear on my faith that will be my reward) is in French.
The case opens to reveal a work of sheer ingenuity. It holds no fewer than 19 small items, each housed in individual compartments designed to fit each piece exactly. These include several bottles with stoppers shaped either as gold shells or as birds made from polychrome Chelsea porcelain. The case also contains ivory writing tablets with a pencil, eraser and paper knife, as well as various toiletry items (including combs, a brush, bodkins and an orange stick). Items that were too small to be held easily could be attached to the small twisted gold handle.