More about A Soft-Paste Sèvres Porcelain Cup & Saucer, 1765
Rosalind Savill has discussed the cup and saucer of this style of decoration of turquoise-blue scallop shells, albeit with no painted reserves of birds in landscapes, that is in The Wallace Collection, London. She noted that this scheme may have been called 'à coquilles à ornement' in the Sèvres factory's records. Louis XV bought a cup and saucer of this description in 1773, a replacement for a piece he surely purchased as new in about 1765.
The French National Museum of Ceramics at Sèvres in recent years purchased a large jug and basin with this decoration, created like the Wallace Collection piece without reserves painted with birds.