Q: I have a small mantel clock from my father’s estate. The name of the jewelry store, “Bailey Banks & Biddle of Philadelphia, Pa.,” is barely visible on the face. It’s a windup clock with a key. There is a removable brass cover on the back. Stamped inside are the words “Duverdrey and Bloquel, France, 11 jewels, 1 adjustment” and the figure of a lion. I would like to know the history of this clock.

A: Paul Duverdrey and Joseph Bloquel founded their company in Saint-Nicolas-d’Aiermont, France, in 1910. They used the lion trademark from c.1922 to c.1939. After 1939 the company used the name and trademark “Bayard” on clocks, but the Duverdrey & Bloquel name was still used on clock movements. Clocks shaped like yours were popular in the early 1900s and usually sell for $100 to $150 today.