Rare Musical Repeating Silver Pocket Watch with Cylinder Movemen

No. 21728 and maker's mark "JTF" in diamond-shaped stamp, with 2 1/8 in. (5,4 cm) enameled Arabic dial with Breguet hands, two-air cylinder musical movement (working) with pair of combs (both complete), engraved silver case with traces of gilding and engine-turned gilt interior engraved "Echappement à Cylindre, Quartre Trois en Pierres" and "Pièce à Musique", Ø 2 3/8 in. (5,9 cm), no keys, watch movement inoperative. - The cylinder musical movement (accessed by removing the dial) features a pair of combs in forte-piano setting. The bass comb, with eight teeth, is located on the left. The comb on the right has 31 teeth. Tuning weights are mounted on top - rather than below - the combs. The musical movement is activated at will or upon the hour. A rare and early format. - Provenance: Collection of Luuk Goldhoorn. - Literature: Watch illustrated in "An Exceptional Musical Watch with Two Combs and Two Melodies" by Luuk Goldhoorn, published in MBSGB "The Musical Box", Volume 27, No. 1, pp. 6-7.

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)