Pair of Napoleon III mounted shells with white barnacles

These striking seashells are beautifully mounted on round carved bases. They date to the 19^th century and are Napoleon III specimens. These would have been displayed in a cabinet de curiosities. Condition consistent with age and use.

Approx. 6¼” x 3½” wide x 11½” high each

Approx. 16cm x 9cm wide x 29cm high each