Les Valseurs Musical Automaton by Alexandre Théroude, c. 1850

Depicting a waltzing couple, with wax-coated papier-mâché heads, glass eyes and original hair wigs, original silk costumes edged in lace (the lady) and soutache trim (the gentleman), on conical green grain-painted metal base with three spoked wheels, two brass plaques: "A. Theroude, Paris" and "Breveté, S.G.D.G.", going-barrel motor and single-air cylinder movement, ht. 12 ½ in. (31.5 cm), original working condition, with wood-handled crank. Included are a modern glass dome and presentation base. - Note: An ingeniously designed mechanical toy, the movement of Théroude’s waltzing couple is achieved by a pair of driving wheels and a smaller steering wheel, fixed at an angle, that create the circular trajectory of the base. A second axle at the lady’s waist causes the couple to twirl around and around in imitation of a lively dance. - Literature: Christian Bailly, "Automata, the Golden Age", p. 35, for a similar piece.

布雷克拍品等级是为了方便竞买人判断拍卖品的成色而设置的。布雷克等级用1到6级来标注外观和功能的成色，(从非常好到非常差)。 在目录图册里用括号里的2个数字来表示，前一个数字表示外观成色的级别，后一个数字表示功能成色的级别。如(3/2)表示外观成色是3(满意的)，功能成色2(好)。 成色 定义参照下列标准： 1 - 非常好 (未使用过，没有使用痕迹) 2 - 好 (新，极少的使用痕迹) 3 - 满意的 (普通的使用痕迹) 4 - 及格的 (明显的使用痕迹，某个非主要部件是后配的) 5 - 有缺陷的 (极明显的使用痕迹, 某个主要部件是后配的，功能上有缺陷，需要修理) 6 - 非常差 (严重破损, 缺少重要部件)