Late 18th Century Gold Vinaigrette

Oval-shaped gold and enamel vinaigrette. The vinaigrette is entirely decorated with a guilloche motif with stylized flower. The hinged lid is decorated in the center with a medallion with a violet in royal blue enamel on a matte background. The vinaigrette opens on a fine pierced grid which allowed to contain a sponge soaked in flavored vinegar.
L: 1.22in. (3.1 cm) / l: 0.94in. (2.4 cm) / H: 1 cm.
Rooster head 1798-1800.
Boar head 1795-1797.
Goldsmith:?. L. B (thought symbol).
Period: French Restauration. Circa 1810-1815.