Cup with cover and saucer

Egg-shell porcelain cup with cover and saucer, in a set of five (with LL 87, LL 88, LL 6470 & LL6472). On the cup are upright arched panels. In the centre is a European king and queen enthroned; and in the other panels, alternately, a praying figure with birds, and flowering plants. Beneath the rim is the inscription: L'EMPIRE DE LA VERTU EST ETABL-JUS-AU BOUT DE L'UNIVERS. Cover and saucer to match, with foliage scrolls: four symbols outside. Mark of a fretted square underneath.