Two Sèvres biscuit profile plaques late 18th/early 19th century

Two Sèvres biscuit profile plaques late 18th/early 19th century, one of a lady, set on a blue base and apparently signed 'Blanchard', the other of Louis Philippe, mounted on a black velvet frame and indistinctly signed and dated, and a fragmentary biscuit porcelain plaque of a man wearing an oakleaf garland, the reverse incised ML, damages to the latter, 8.2cm max. (3)