The factory remains at what was then Rue de Clignancourt, Montmartre, Paris; it may have already been in production at that point.
In January 1775 it was placed under the protection of Monsieur, the King's brother, and future Louis XVIII.
The factory was transferred to Deruelle's son-in-law in 1790, and production had presumably ceased by the time the building was sold in 1791.
The Metropolitan Museum of Art has a very rare round plaque inset as a table top, painted with flowers.
[2] The mark was originally a windmill (a symbol of Montmartre), replaced in 1775 by the prince's initials of "LSX".