Probably an officers pom pom from the first quarter of the 19th Century.
Napoleonic French 12th Regt. Pom-Pom. The pom-pom is embroidered in white thread on medium blue wool, and has a twisted light blue cording for outer border. Mounted on heavy wire for attachment to shako.
Approximately 50mm high (pom pom).
Very good condition with some soiling overall.
This headgear component is usually missing, and never around when you need one.