Gustave Trouillard (XIX) A Large mantel clock, Poseidon, Patinated spelter, circa 1900. Patinated spelter. Large mantel clock, mounted with a sculpture of Poseidon or Neptune, signed G. Trouillard (for Gustave Trouillard, 19th century). Mechanism and dial marked for J.M.J. van Wielik, La Haye (The Hague, Netherlands, circa 1900). (50 x 86 x 30 cm) Condition: We do not guarantee the working condition of the clocks and/or watches, and they have not been tested. For long-term accuracy, we recommend a full overhaul by a professional watchmaker. Poseidon's trident is missing. Condition: We do not guarantee the working condition of the clocks and/or watches, and they have not been tested. For long-term accuracy, we recommend a full overhaul by a professional watchmaker. Poseidon's trident is missing.