

In his book, Watches in the Ashmolean Museum (2007, pp.24-25), David Thompson notes a small number of silver animal-form watches dating to the mid-17th century including: a lion with movement by the Geneva maker Jean Baptiste Duboule, a rabbit with movement by Pierre Duhamel, a dog with movement by Jacques Jolly and a swan with movement by Henry Ester. Two very similar dolphin-form watches, one by Jean-Baptiste Duboule and one by Jean-Henry Ester may be found at the Patek Philippe Museum (inv. S-248 & S-326, see: P. Friess, Patek Philippe Museum, Vol. III, 2015, p.66).
An F. Sermand is listed as active in c.1640 by Brian Loomes in Watchmakers and Clockmakers of the World, 21st Century Edition, 2006, p.700.