&quot;Precision clock.&quot; With patinated bronzes by Pierre-Philippe Thomire representing Genius and Experience on black marble base, enamel dial with Breguet numerals, twin-barrel movement, constant-force escapement visible above dial, and rotating disc for seconds; 24 3⁄4 × 13 3⁄8 × 8 1⁄4 in. (62.9 × 34 × 21 cm). Sold October 22, 1806, to Mr. de Pourtalès for 3,000 francs. B453. Collection Montres Breguet S.A.